Question

read the claim below.
the most important medical advance of all time was alexander flemings discovery of penicillin in 1928.
select the piece of evidence that best supports this claim.
penicillin, the first widely used antibiotic, has saved millions of lives around the world.
due to the overuse of penicillin and other antibiotics, some bacterial infections have become harder to treat.

Explanation:

The claim is about the importance of Fleming's discovery of penicillin. The first option states penicillin (the first widely used antibiotic) saved millions of lives, which directly supports its importance as a medical advance. The second option talks about overuse issues, not its importance as an advance.

Answer:

The piece of evidence that best supports the claim is: "Penicillin, the first widely used antibiotic, has saved millions of lives around the world."