Answer:
1)Joan likes eggs; Jennifer does not.
2)The cat slept through the storm; the dog cowered under the bed.
Explanation:
Semicolons are also used in a sentence when something stronger than a comma is needed.
It is answer 4 because the other three are not related to space and even though there are volcanoes on other planet, that question is not as relevant as the other last two.
An idea, opinion, or assertion presented in an argument
