Question

1. the ideas in a compound sentence can be joined with ______________. choose two a comma and coordinating conjunction an exponent a semicolon a comma only a period

Explanation:

In grammar, compound sentences can be formed by using a comma along with a coordinating conjunction (e.g., and, but, or) to join independent clauses. Also, a semicolon can be used to connect two closely - related independent clauses. An exponent is a mathematical concept and not relevant here. A comma alone usually creates a run - on sentence. A period ends a sentence and does not join ideas in a compound sentence.

Answer:

A. A comma and coordinating conjunction
C. A semicolon