A <u>compund sentence</u> is the one that has at least two independent clauses that share a related idea. Within this list, the one that contains the correct punctuation is:
Jerry researched the report, and I took notes.
In this compound sentence, the independent clauses are joined by the conjunction <em>and</em>. Whenever a conjunction joins two independent clauses, a comma must precede it. Therefore, this is the correct punctuation.
