The number which is neither prime nor composite is
Defining Prime numbers: Prime numbers are natural numbers that are divisible by '' and the number itself. In other words, prime numbers are positive integers greater than with exactly two factors, and the number itself.
Composite numbers: A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor other than '' and itself.
The explanation for option(A):
So, is a divisor of ''. So, it is a composite number.
The explanation for option(B):
The number '‘ has no other factor other than ’' and itself. So, ‘’ is a prime number.
The explanation for option(C):
The number ‘’ has no other factor other than ‘’ and itself. So, '' is a prime number.
The explanation for option(D):
The number '‘ has only one factor, i.e., ’', So, it is neither prime nor composite.
Therefore, option (D) is the correct answer.