Answer:
b. The packages became too heavy for me, I dropped them.
Step-by-step explanation:
A comma is a punctuation mark that is used in a sentence to bring a little pause. It is also used to separate the items that form a series. The use of a comma in the above sentence has been incorrectly used. The sentence contains two independent clauses, 'the packages became too heavy for me,' and 'I dropped them'. These independent clauses are separated in the sentences by using either a conjunction or a semi-colon. In the place of a semi-colon, a comma has been used. This reflects the incorrect use of the comma.