Concept:A prime number has exactly two distinct factors: 1 and itself. A composite number has more than two factors. The number 1 has only one factor (itself), so it does not fit either definition.
Explanation:Prime numbers like 2, 3, 5, and 7 are divisible only by 1 and the number itself.
Composite numbers like 4, 6, 15, and 22 have at least one additional factor beyond 1 and itself.
The number 1 has exactly one factor, which is 1. It is not divisible by any other natural number.
Therefore, 1 does not satisfy the conditions for being prime or composite.
This is a standard definition in number theory.
Options A, B, and C are false because 1 is neither prime nor composite.
Only option D correctly states this fact.
Answer:D. 1 is neither prime nor a composite number.