Problem: How does the sentence end?

The boy on the bike couldn't catch the boy on the skateboard, because the 
OPTIONS:
- bike was slower.
- skateboard was slower.
Answer: bike was slower.

Problem: How does the sentence end?

I put all my coins in a piggy bank instead of a coin purse because the 
OPTIONS:
- coin purse was large enough.
- piggy bank was large enough.
Answer: piggy bank was large enough.

Problem: How does the sentence end?

I was able to carry the paint roller but I asked my husband to fetch the bucket because the 
OPTIONS:
- paint roller was light.
- bucket was light.
Answer: paint roller was light.

Problem: How does the sentence end?

Samantha needed a washcloth because Maria bumped into him. 
OPTIONS:
- Samantha felt frustrated at being bumped into.
- Maria felt frustrated at being bumped into.
Answer:
Samantha felt frustrated at being bumped into.