When writing a subject line to an email, one must try to do all of the following except which one?
a. grab the attention of the recipient.
b. provide necessary information to clearly describe email contents.
c. be vague.

Which sentence has an incorrect shift in pronoun-antecedent agreement? a) each teacher needs to be paired up. b) each man needs to carry his own load. c) each of these women runs their own business. d) each child should bring his or her own lunch.