Please help!! The subject is on Logical Fallacies - Methods of motivation 3. What effect does the use of the logical fallacy In this paragraph have on the credibility of the author's argument?

A. It strengthens the argument because it shows that the author carefully researched the results.
B. It strengthens the argument because it shows that the author has narrowed the potential conclusions.
C:It weakens the argument because it shows that the outhor may have failed to consider all outcomes.
D. It weakens the argument becouse it shows that the author has bosed the argument on an incorrect idea,

C:It weakens the argument because it shows that the outhor may have failed to consider all outcomes.

Explanation:

According to the given excerpt, it is narrated that some certain methods have to be adopted by other schools which is a sure fire way to improve the output of students. This is based on a faulty premise that because it worked for one school, it would work for other schools.

Hence, the effect the use of the logical fallacy in this paragraph have on the credibility of the author's argument is that it weakens the argument because it shows that the author may have failed to consider all outcomes.

is it multiple

its probably a noun because a noun is a person place or thing