Question

In the winter the temperatures dip below zero, so many people vacation in warmer climates.

A. simple
B. complex
C. compound
D.complex-compound.

Answer 1

Compound (c) is your answer

Answer 2

compound sentence.
"In the winter the temperatures dip below zero."
is an independent sentence.
"Many people vacation in warmer climates." is also an independent sentence. These two sentences are connected by the conjunction "so". compound sentence contains: for, and, nor, but, or, yet, so ( for further help )
So C would be your correct answer!