Monica had to help Sarah make a sign on Minecraft because 
OPTIONS:
- Monica had a lot of experience making them before.
- Sarah had a lot of experience making them before.
Monica had a lot of experience making them before.

Steve's injured knees had to undergo several complex medical procedures because the 
OPTIONS:
- knees were buckling.
- procedures were buckling.
knees were buckling.

To groom his facial hair, Adam preferred to use a hand razor over an electric razor because the 
OPTIONS:
- electric razor was gentle on his skin.
- hand razor was gentle on his skin.
hand razor was gentle on his skin.