Concept:Emphatic stress shows which word carries the contrast in meaning.
Explanation:The word TEACHER receives emphasis.
This means the other details in the sentence, such as Ojo and the prize, are already known.
The only new or contrasting point is TEACHER.
So the correct question must ask about something else, like dancer.
Option C asks, "Did Ojo win the prize for the best dancer?"
The answer to that question would be, "No, Ojo won the prize for the best TEACHER."
Answer:C. Did Ojo win the prize for the best dancer?