Question

which logical fallacy is used in the text?
mom, i know youre upset that i went over my cell limit this month. the important issue here, though, is that i got an a on my algebra exam.
straw man: a misrepresentation of an opponent’s position that makes it easier to argue against
circular reasoning: an argument that supports a claim with the claim itself
red herring: the use of a completely unrelated topic or idea

Explanation:

The child is trying to divert the mother's attention from the cell - limit issue by bringing up the A on the algebra exam. This is a classic example of a red herring fallacy, where an irrelevant topic (the good exam grade) is introduced to distract from the main issue (exceeding the cell - limit).

Answer:

Red herring.