Answer:
USE A COMMA TO SEPARATE INDEPENDENT CLAUSES.
USE A COMMA AFTER AN INTRODUCTORY CLAUSE OR PHRASE.
USE A COMMA BETWEEN ALL ITEMS IN A SERIES.
USE COMMAS TO SET OFF NONRESTRICTIVE CLAUSES.
USE A COMMA TO SET OFF APPOSITIVES.
USE A COMMA TO INDICATE DIRECT ADDRESS.
Explanation:
Use commas to separate independent clauses when they are joined by any of these seven coordinating conjunctions: and, but, for, or, nor, so, yet.
Use commas after introductory
a) clauses,
b) phrases
c) words that come before the main clause.
