Identify whether the clause below is a main clause or a subordinate clause. if you cared about the program
a. main
b. subordinate

This is a subordinate clause. Subordinate clauses, although they contain a subject and verb (predicate) like all other clauses, do not express a complete thought and cannot stand alone in a sentence. "If you cared about the program" does not make sense by itself; thus it is a subordinate clause.