Answer: B) The packages became too heavy for me, I dropped them.
Step-by-step explanation: when we have two independent clauses (phrases that have a subject and a predicate and make complete sense on their own), we can join them in two ways: by using a conjunction (so, but, and, etc) placed after a comma (the packages became too heavy for me, so I dropped them), or by using a semicolon (the packages became too heavy for me; I dropped them). But using only a comma is incorrect.