When should a comma be used?
A. to create a pause
B. to change the subject
C. to end a sentence
D. to build suspense
A. to create a pause
Commas are used to indicate a pause in a sentence, separate items in a list, separate clauses, or to set off certain elements within a sentence. They do not change the subject, end a sentence (that is the role of a period), or build suspense.