The author feels that the scientists' study of Surtsey – A made it famous. made them wealthy. C was unnatural. was a waste of their time.

made it famous

Explanation:

"Surtney" is a volcanic island that is located in Iceland. It is said to have been formed from a volcanic eruption, which many scientists have continued to study. They found interesting facts about the island, which started barren but later on, supported many life forms.

The research of the scientists on the island made it famous because it gave the people a lot of information. With the help of scientists, many things about the island were disclosed to the public and this made it even more popular.

So, this explains the answer.

It’s asking about an experience that YOU have with someone, if you genuinely can’t think of one, just make something dramatic up. but none of us can really help you with this since it wants something personal.