Which one of the following is possible?

Correct Option (2)

Based on the established age hierarchy and the given range of ages (17 to 22 years), the following age assignments are derived:

• E is 22 years old (Oldest).
• A is 21 years old.
• C is 20 years old.
• One of B or D is 19 years old.
• F is 18 years old.
• The remaining person (D or B) is 17 years old (Youngest).

Therefore, F being 18 years old is consistent with the deduced age structure and represents a possible scenario.

Incorrect Options:

• Option 1 (D is 20 years old): According to the derived age assignments, D can only be either 19 years old or 17 years old. D being 20 years old is not possible as C is definitively 20 years old.

• Option 3 (F is 19 years old): The established age sequence assigns F an age of 18 years. Therefore, F being 19 years old is not possible.

• Option 4 (F is 20 years old): As per the derived age assignments, F is 18 years old, and C is 20 years old. Thus, F being 20 years old is not possible.