The expression can be divided by one and itself only. Then the expression is a prime expression. The correct option is C.
<h3>What is a factorization?</h3>
It is the method to separate the polynomial into parts and the parts will be in multiplication. And the value of the polynomial at this point will be zero.
The expression is 
The expression can be written as

The expression can not be the real factor.
Since the expression can be divided by one and itself only.
Then the expression is a prime expression.
Thus, the correct option is C.
More about the factorization link is given below.
brainly.com/question/6810544