Determine whether each sentence from A Black Hole Is NOT a Hole compares or contrasts. A black hole works something like that whirlpool. However, near a black hole, gases and dust and stars encounter its tug. But anything inside this zone stays in the black hole's place in space forever. It just (sort of) acts like one.

The answer is compare, contrast, contrast, compare.

Explanation:

I had to rearrange the question (because I've done it before) to understand it.

Determine whether each sentence from A Black Hole Is NOT a Hole compares or contrasts.

A black hole works something like that whirlpool.

compares / contrast

However, near a black hole, gases and dust and stars encounter its tug.

compares / contrast

But anything inside this zone stays in the black hole's place in space forever.

compares / contrast

It just (sort of) acts like one.

compares / contrast

The first sentence- compare

The second sentence- contrasts

The third sentence- contrasts

The last one- compare.