Answer:
4
Step-by-step explanation:
We can find the GCF by listing the factors of 44 and 20
Factors of 44 are : 1, 2, 4, 11, 22, 44
Factors of 20 are : 1, 2, 4, 5, 10, 20
The common factors are : 1, 2, 4
The GCF is 4