Some months have 31 days; how many have 28?
B
Correct answer
Explanation
Every month has at least 28 days - February has exactly 28 days (except in leap years when it has 29), while all other months have 30 or 31 days. Therefore, all 12 months have 28 days. Option C (1 month) and A (10 months) are incorrect because they miss the universal fact about calendar months.