Which drug is indicated for pain related to acute renal calculi?: (A) Narcotic analgesics, (B) Nonsteroidal anti-inflammatory drugs (NSAIDS), (C) Muscle relaxants, (D) Salicylates
Answer is A. Narcotic analgesics are usually needed to relieve the severe pain of renal calculi.

Options B and D: NSAIDS and salicylates are used for their anti-inflammatory and antipyretic properties and to treat less severe pain.
Option C: Muscle relaxants are typically used to treat skeletal muscle spasms.