Question

highlight the word or phrase that makes the thesis statement wordy.
despite his treatment of zero, mr. pendanski is a counselor who is good.

Explanation:

To identify the wordy part, we simplify the sentence. "a counselor who is good" can be rewritten more concisely as "a good counselor". The phrase "who is" makes the sentence wordy as it can be omitted for a more direct construction.

Answer:

who is