Which of the following best describes the alien’s reaction to seeing the humans?
the alien examines them with delight.
the alien mocks their appearance.
the alien approaches them cautiously.
the alien is perplexed and annoyed.

I would go with A. also.

Explanation:

The aliens (Micromegas and his dwarf friend from Saturn) examined the boat with the philosophers in it, and at first, thought that there was no way the tiny, tiny, beings could be intelligent.  But later, they do come to the conclusion that they are indeed, intelligent, and they have a philosophical discussion with the humans.