Answer:
First option:

Second option:

Third option:
Explanation:
By definition, the Greatest Common Factor (GCF) is the greatest factor that divides two or more numbers with zero remainder.
Given the expressions
and
, you can find the Greatest Common Factor using this procedure:
1. List the prime factors of each expression:

2. List the common factors and multiply them. Then:

Therefore,
,
and
are part of the Greatest Common Factor.