A Venn diagram would look like two circles about to combine. there would be a small space in the middle for things or details that would be the same while on one side the facts would be different and on the other, the same.
Option A consists of two independent clauses, therefore there's a coordinating conjunction in between them to help the sentence flow.
Answer:
C and D
Explanation:
The text makes this clear from the beginning and I believe Part C of this two-part question supports Part D's answer
Problem and solution because the problem is the common cold and the solution is the remedies that can help that problem