An example of a grad-school level question?
Arteries and veins are two important parts of the circulatory system. What is the relationship between arteries and veins?

I just took a test in school today. What question was I asked?

Question I was asked: What is the correct explanation for why we have day and night on Earth?

Random question?

Which is an example of light being reflected?

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Question generated: New carpet is being measured for a room that is 5.5 m by 4.6 m. On a measuring tape, what is the smallest unit that is necessary to measure the room accurately for the carpet?

Problem: Write a question you would see in a school textbook.

Answer: Which human activity most often has a harmful effect on the environment?

Problem: Write a question you would see in a school textbook.

Answer:
A student is dropping objects of various sizes and shapes and recording the time it takes for each object to hit the ground. Which question is the student most likely trying to answer?