The correct answer is C. In clinical psychology, the therapist tries to treat mental disturbances without prescribing drugs; therefore, this branch of psychology often carries the label talk therapy.
Explanation:
Comma splice and fused sentences are the results of incorrect punctuation or lack of punctuation between two complete sentences or independent clauses. This can be corrected if a semicolon is added between the sentences, which can include one conjunction such as however, therefore, etc. after the semicolon. This correct punctuation occurs only in C because, in this, the two independent clauses are separated by a semicolon, which does not occur in options A and B.