The pronghorn, an antelope-like mammal that lives on the western plains of North America, is the continent's fastest land animal, capable of running 90 kilometers per hour and of doing so for several kilometers. ███
Elaboration ·Relict behavior can disappear over time
Arctic squirrel lost extinct predator avoidance behavior after 3m years.
Passage Style
Phenomenon-hypothesis (RC)
Single position
19.
Which one of the following █████████ █ ███████ █████████ ██ ███ ███████ ████ ███████ ███████ ██████ ████ ███████ ██ ██████
Question Type
Stated
The author describes the benefits of roaming in herds in the middle of P3: “pronghorns—like many other grazing animals—roam in herds, which allows more eyes to watch for predators and diminishes the chances of any particular animal being attacked”.
a
The greater density ██ ███████ █████ ██ ██████████ █████████ ██████████
Not stated. The herding allows “more eyes to watch for predators and diminishes the chances of any particular animal being attacked.” Intimidation of predators isn’t mentioned as a benefit.
2%
b
The larger number ██ ██████ ██ █ ████ █████ ██████████ ██ ███ ███████ ███████ ████ █████████ ████ ███████
Not stated. The herding allows “more eyes to watch for predators and diminishes the chances of any particular animal being attacked.” The easier protection of younger animals isn’t mentioned as a benefit.
1%
c
With many animals █████████ ██ ██ ██████ ███ ███ ████ ██ ████ ████ ███ ██████
Not stated. The herding allows “more eyes to watch for predators and diminishes the chances of any particular animal being attacked.” The author mentions increased competition for food, but this isn’t a benefit of herding.
1%
d
The likelihood that ███ █████ ██████████ ████ ██ ████████ ██ █ ████████ ██████████
Stated as a benefit of herding.
96%
e
The most defenseless ███████ ███ ███████ ███████ ██████ ██ █████████ ██ ███ ██████ ██ ███ █████
Not stated. The author never comments on how an animal can achieve greater safety within a herd.
1%
Difficulty
96% of people who answer get this correct
This is a low-difficulty question.
It is significantly easier than other questions in this passage.
CURVE
Score of students with a 50% chance of getting this right
25%128
136
75%144
Analysis
Stated
Stated
Stems asking us to identify an idea that appears explicitly in the passage (as opposed to ideas that are merely implied).
Passages that focus on describing or evaluating potential explanations for a given phenomenon. Causal reasoning features prominently in these passages.
