Self-study
Conclusion People who say that Dooney County is flat are clearly wrong. ██ ████ █████ ████ ███████ ██ █████ ██ ███ █ ████████ █████████████ ███████ █████ ████ ██ ████ ██ ███ █████ ████████ ██ ███████ ████████ ███ █ ████ ████ ███ █████ ██ ██████ ██████ ███ ██████ ████ █████████
Method of Reasoning
The stimulus can be diagrammed as follows: 
13.
The reasoning in the passage ██ ████ ███████ ██ ████ ██ █████ ███ ██ ███ ██████████
a
If we paint ███ ████ ██████ ██ ████ ███ ████████ ███ ██ ████ ████ ██ █████ ██ █████ █████ ██████████ ██ ██████ █████ ██ ████ █████
Mismatched conclusion. The conclusion of the stimulus comes from taking the contrapositive of a conditional relationship given in the premises. The conclusion of (A) is a completely new idea that was not discussed in the premises.
b
People with children ████ ████ █████ ████ █████ ███████ █████████ ███ ██████ ████ ██ ████████ ███ ███████ ██████ ██████ ███████
Mismatched structure. This is not an argument with premises that support a conclusion; this is just two facts.
c
People who get █ ███ ██ ████████ ████ ██ ███████ ███████ ███████ ██████ ██████ ███ ███ █ ███ ██ ████████ ██ ███ ███ ██████████ ██ ████ ████ ████ ███████ ████ ██ ██████ ████ █████ ██ ███████████ ██ ██ ████ ███ ██ ███████ █ ███ ██ █████████
The diagram of (C) parallels the diagram of the stimulus:
d
If I go ███████ ████████ ████ █ ██ ███████ █ ███ █████ █████ ███ ██████ ██████ ██████ █████ ██████████ █ ██████ ████ ███████
Mismatched conclusion. The conclusion of the stimulus comes from taking the contrapositive of a conditional relationship given in the premises. The conclusion of (D) is a completely new idea that was not discussed in the premises.
e
People who have ████ ███████ ████ ██ ██ ███ ██████ ██ ████ ████ █████ ██████████ ██ ███ █████ ██ ████ ████ ████████ ██ ████ ███ █ ████
Mismatched premises and conclusion. (E) does not operate by giving a conditional relationship, failing the necessary condition, then concluding with the negation of the sufficient condition. Instead, (E) outlines a correlation (people with lots of friends tend to go out a lot so they need cars), then makes a conclusion that if someone wants a certain result (having lots of friends), then that person should take the action correlated with that result.