Question

what is the active ingredient in aspirin? a methylsalicylate b acetylsalicyclic acid c salicylic acid d propylsalicylic acid

Explanation:

Aspirin is the common - name for acetylsalicylic acid, which is its active ingredient. Methylsalicylate is found in wintergreen oil, salicylic acid is a precursor to aspirin, and propylsalicylic acid is not the active ingredient in aspirin.

Answer:

B. acetylsalicylic acid