Answer:
Option D is correct.

Step-by-step explanation
Greatest common factor(GCF) of a polynomial states that the largest polynomial that divides into the polynomials.
Given that:

First find the GCF of the expression.
The GCF of 24 and 6 is 6.
And the
GCF of
is

Combine these to find the GCF of the polynomial is,

then;
Therefore, the greatest common factor of
is
