Walked is the verb in the sentence
I would say try to learn it every time also always test yourself, for a student and a adult teaching try to get the student happy because it the student is upset they won't get anywere. Hopefully that helps you ❤
The answer to the question is A. It wants me to write a long sentence even tho I don’t want to so I will repeat myself and say it is A
Present
Present progressive has "-ing", present emphatic requires the verb "do" or "does" and present perfect requires "is/has/have"