Question

I believe it’s C but I’m not sure.

Answer 1

Answer:

C. The solar system formed from space dust, after all.

Explanation:

The topic sentence is:

• Space exploration is not a waste of money.

We'd expect this passage to follow up on why investing in space exploration is a good use of money.

Here are the sentences that follow:

• Rocket companies and astronaut training programs give high-paying jobs to skilled professionals.
• The technologies they create helps people on earth daily.

This tells us that skilled space professionists are well-paid because the technologies they create help us daily. This is related to how space exploration is worth investing in.

• The solar system formed from space dust, after all.

This sentence has no relation whatsoever to our topic. It does not relate back to the topic sentence.