The correct answer is (option A)
How did we figure this out?
We are trying to find the greatest common factor of 6 and 10 so we need to divide 10 and 6:
→ 10/6
→ = 1.6
→ = 2
How does it equal 2?
Now we are rounding the number 1.6. 6 is close to 10 so it would equal 10 = 2
Therefore, the correct answer is (option A)