Final answer:
The minimum length drywall screw used for installing 5/8" drywall to wood studs is 1-1/4".
Step-by-step explanation:
The correct answer is A. 1-1/4". The minimum length drywall screw used for installing 5/8" drywall to wood studs is typically 1-1/4". This length allows enough penetration into the stud to securely hold the drywall in place without the screw coming through the other side of the stud.