Where is the sentence you are referring to in the question?
D i believe is the answer
Answer:
The correct answer is Writing a list of questions to answer about the topic.
Explanation:
4) Time-consuming lab work
3) Exhaustive note taking
It's asking you proof that Ramirez is a demanding teacher not about the course itself so it is not 1, 2, 4 or 6. It is 4 and 3 because it shows Ramirez was demanding by enforcing a heavy load of work