1. The problem asks how many meaningful English words can be formed by replacing the first letter of each given word with "S". 2. The given words are: CAT, PUT, LET, BUN, WIN. 3. We replace the first letter of each word with "S" and check if the resulting word is meaningful: - CAT → SAT (valid English word) - PUT → SUT (not a common English word) - LET → SET (valid English word) - BUN → SUN (valid English word) - WIN → SIN (valid English word) 4. Counting the meaningful words formed: SAT, SET, SUN, SIN, which makes 4. 5. Therefore, the answer is d) More than three.