Explanation:
The expression that is the factored form of 10x - 25 using the greatest common factor is option A: 5(2x - 5).
To factor the expression, we need to find the greatest common factor of the terms, which in this case is 5. We then write the expression as a product of 5 and a second expression with the remaining terms:
10x - 25 = 5 * (2x - 5)
So, option A is the correct answer.