Answer:
The type of sentence made up of two simple sentences joined with a comma and a coordinating conjunction is: a compound sentence.
Explanation:
A simple sentence is constituted of a single independent clause. It has a subject and a predicate, and it expresses a complete thought. When we put two simple sentences together, joining them with a comma and a coordinating conjunction, we have what is called a compound sentence. An example of a compound sentence is:
Simple: I love chocolate ice cream.
Simple: My boyfriend loves strawberry ice cream.
Compound: I love chocolate ice cream, but my boyfriend loves strawberry ice cream.
