What human flexibility is reduced by the automated system of education in the story?

Correct answer: Lively response to the child's feelings and doubts

The automated system follows programmed procedures and measures performance, but it lacks the emotional and interpretive flexibility of a human teacher. A person can notice whether a child is anxious, bored or confused and can change the explanation, offer encouragement or answer an unexpected question. Margie’s mechanical teacher cannot respond meaningfully to such personal signals; it continues according to its programming and treats learning mainly as a sequence of lessons and tests. Option A is correct because it describes the reduced ability to respond to a child’s feelings and doubts in a lively, individual way. The number of tests, screen size and book colour are technical or physical matters, not forms of human flexibility affected by automation.