Multiple choice

Directions: Choose the correct option to fill in the blank.The drug was discovered by _______________.

  1. chance

  2. serendipity

  3. research

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

"Serendipity" means finding something valuable or delightful by chance while looking for something else. Many famous drugs (like penicillin) were discovered accidentally through serendipity rather than intentional research. "Chance" alone is less precise, and "research" contradicts the accidental nature implied.