In Each Set Below, Select the Letter of the Sentence

Multiple Choice

In each set below, select the letter of the sentence in which commas are used correctly. In which sentence are commas used correctly?

A) As a mail carrier, Alyce had to sort, bag, and deliver the neighborhood's mail.
B) As a mail carrier Alyce had to sort bag and deliver the neighborhood's mail.
C) As a mail carrier, Alyce had to sort, bag, and deliver, the neighborhood's mail.