What is commonly known as baby Aspirin and is used for pain relief?

Acetylsalicylic Acid is commonly known as Aspirin, and when referred to as "baby Aspirin," it typically denotes a lower dosage formulation (usually 81 mg) used primarily for cardiovascular protection rather than for pain relief, although Aspirin does have analgesic properties. It diminishes pain by inhibiting the production of certain chemicals (prostaglandins) in the body that mediate pain, inflammation, and fever. This makes it effective in treating mild to moderate pain and inflammation.

In the context of the choices given, the term "baby Aspirin" effectively aligns with the medication known as Acetylsalicylic Acid due to its brand name recognition and the lower dosage often prescribed. Hence, while it is widely recognized for cardiovascular health benefits, it is also part of the analgesic category used for mild pain relief.