Final answer:
NSAIDs (Nonsteroidal anti-inflammatory drugs) can decrease tissue inflammation but delays bone healing.
Step-by-step explanation:
The medication class that can decrease tissue inflammation but delays bone healing is a) NSAIDs (Nonsteroidal anti-inflammatory drugs). NSAIDs are commonly used to reduce inflammation and relieve pain, but they can interfere with the healing process of bones. One example of an NSAID is aspirin, which inhibits the production of prostaglandins that cause inflammation.