Problem: How does the sentence end?

Kathy didn't play the horn but chose the piano instead because the 
OPTIONS:
- horn made much more noise.
- piano made much more noise.
Answer: horn made much more noise.

Problem: How does the sentence end?

To kill the octopus, the fisherman used a spear instead of the knife. The 
OPTIONS:
- knife was deadlier.
- spear was deadlier.
Answer: spear was deadlier.

Problem: How does the sentence end?

To prove it would hold better, the electrician replaced the beam with a metal rod. The 
OPTIONS:
- beam was steady.
- metal rod was steady.
Answer: metal rod was steady.

Problem: How does the sentence end?

We cleaned up litter from older and juvenile, we mostly found the 
OPTIONS:
- older people littered because of the soda cans.
- juvenile people littered because of the soda cans.
Answer:
juvenile people littered because of the soda cans.