What is the main idea of this paragraph

B

Explanation:

The passage is listing a lot of things you can do in the park.

It doesn't talk about it being scary, or unpredictable weather, and it only talked about the sandstone in one sentence.

true. the definition explains it: a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc. this is a dictionary definition that i have looked up in a dictionary.