Question: Changing the bit on an adjustable screwdriver.

  Options: 
 A. Choose the type of bit you need. Gently turn the chuck a quarter turn to enlarge the hole so the bit can fit. Place the bit in the hole and tighten the chuck until the bit is secure.
 B. Choose the type of bit you need. Gently turn the chuck a quarter turn to enlarge the hole so the bit can fit. Place the bit in the hole and tighten the chuck until the bit falls out.
Answer: A