Answer:
A
Explanation:
Stalactites and stalagmites are formed by chemical weathering. Water dissolves the calcites in the rock of a cave roof and the calcite is deposited as strange and wonderful structures below.
(https://owlcation.com)
(hope this helps!
I have not read the story/book yet but the climax is the most interesting part of the story :)
Answer: A
Explanation: Enough comma but not too many and there is a period to end the sentence.