PT137.S3.Q17

SECTION 1 · rc

PASSAGE 1
Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7

PASSAGE 2
Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14

PASSAGE 3
Question 15 Question 16 Question 17 Question 18 Question 19

PASSAGE 4
Question 20 Question 21 Question 22 Question 23 Question 24 Question 25 Question 26 Question 27

SECTION 2 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

SECTION 3 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

SECTION 4 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

PrepTest 137 - Section 3 - Question 17

Question

Explanation

Analytics

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Any food that is not sterilized and sealed can contain disease-causing bacteria. ████ ██████████ ███ ████████ ███████ ████████ ██ ████████ ██ █████████ █████ ███ ████ █████████ ██████████ █████████████████ ███████████ ████ ████████ ██████ ███████████ ███ ███████ ████ ██ ████ ██ █████ ███████ ███ ██████ ██ ███████████████ █████████ ████ ██ ███ ██████████ ███ ████ ███████ ███████ ████ ███████ ████ █████ ████ ██ █████ ██ ████████ ████████

Summary

Any food that is not sterilized and sealed can contain disease-causing bacteria.

Any food that has been sterilized and properly sealed does not contain bacteria.

Some acceptable food-preservation techniques involve sterilizing and sealing food.

Some acceptable food-preservation techniques involve slowing the growth of disease-causing bacteria.

Some acceptable food-preservation techniques may destroy natural food enzymes that cause food to spoil or discolor quickly.

Notable Valid Inferences

It is possible to preserve food in an acceptable way without entirely eliminating disease-causing bacteria.

If a food has been preserved without being sterilized or sealed, that food could contain disease-causing bacteria.

Analysis by HollyShulman

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17.

If the statements above are █████ █████ ███ ██ ███ █████████ ████ ██ █████

All food preserved ██ ██ ██████████ ██████ ██ ████ ██ ███████████████ █████████

Must be false. The stimulus states that some acceptable food-preservation techniques involve slowing the growth of disease-causing bacteria, rather than eliminating them completely.

Preservation methods that ███████ ███████ ████ █████ ████ ██ █████ ██ ███ █████████ ███ █████

Could be false. The stimulus is vague about which techniques destroy natural food enzymes, so it’s possible that a sterilization technique might do so.

Food preserved by █ █████████████ ██████ ██ ████ ██████ ██ ████████ ███████ ████ ████ █████████ ████ █████ ████████

Could be false. The stimulus is vague about which techniques destroy natural food enzymes and thereby cause food to discolor less quickly, so it’s possible that sterilization does not have this effect.

Any nonsterilized food █████████ ██ ██ ██████████ ██████ ███ ███████ ███████████████ █████████

Must be true. The stimulus explicitly states that any food that has not been both sterilized and properly sealed can contain disease-causing bacteria!

If a food ████████ ██ █████████ ████ ██ ███ ████ █████████ ██ ██ ██████████ ███████

Could be false. The stimulus doesn’t say that only sterilized and sealed (and thus acceptably preserved) food can be bacteria-free; rather, it tells us that all food that has been sterilized and sealed is bacteria-free. (E) confuses the necessary and sufficient conditions.

Difficulty

Question

72% of people who answer get this correct

This is a moderately difficult question.

CURVE

Score of students with a 50% chance of getting this right

25% 140

152

75% 165

Analysis

Question Stem Tags

Must be true

Stems that ask which answer choice "must be true." Related to Inference and MSS, but correct answers require 100% support with no assumptions of any kind.

Stimulus Tags

Conditional reasoning

Stimuli that feature conditional and set logic (e.g. A → B, A is true, therefore B is true).

Answer Popularity

Popularity Avg. score

159

157

72%

165

15%

160

Question history

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