Which of the following is a compound sentence?

Question

A. To get to the zoo, we took the train and a cab
B. Before we left, I bought a hat at the gift shop.
C. It was a beautiful day, so we decided to go to the zoo.
D. We saw pandas during our visit to the zoo.

Answer 1

A. To get to the zoo, we took the train and a cab

Answer 2

are you sure?

Answer 3

I apologize for the error in my previous response. The correct answer is:

C. It was a beautiful day, so we decided to go to the zoo.

This is a compound sentence because it consists of two independent clauses connected by the coordinating conjunction "so."