3. PART A: According to Khan, how are students

affected when mastery is not the goal?

According to Sal Khan, students are affected in a way they struggle to keep up with the class and their learning development slows, when mastery is sorted as not the goal.

Explanation:

the mastery as the goal and not the test scores was the gist of the Ted Talks given by Sal Khan, the entrepreneur of Khan Academy. His motive behind the talk in the show was to promote the goal of education as mastery and not to promote the excellence in test scores or to demand test scores.

Pertaining to his thoughts, when mastery is sorted as the goal, students develop better study habits in order to keep up with the curriculum. And in lieu of that when sorted as goal, they are not able to keep up with the class and its performance, ultimately lags behind and develop a much slower approach towards leaning.