Question

Which sentence does not contain any punctuation errors?

a. What time, Lieutenant, must we report for duty?
b. What time Lieutenant, must we report for duty?
c. What time, Lieutenant must we report for duty?
d. What time Lieutenant must we report for duty?

Answer 1

Lieutenant is not a part of the main clause, and it is an address to a person that is inserted into the sentence. It must be therefore separated by comas on both sides: the correct answer is a.