He's the most successful president because he knows how to govern better than anyone else. how do you know that this example is illogical?

it simply restates the statement using different words.
it uses strong language to arouse emotions, instead of appealing to logic.
it appeals to the audience's innate desire to follow the crowd or fit in.
it attacks the opposition instead of the argument.

It simply restates the statement using different words. i took the test this is the right answer

This example is illogical because: It simply restates the statement using different words.

Explanation:

In logic there are rules in order to determine whether an argument is valid or not. In this case it corresponds to a fallacy or a error in the logic of the argument. It corresponds to a fallacy named "Begging the question" which is about circuling with the same idea without using logical reasoning.

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.