IN:
Multi-choice problem: [they]

The zombies chased the survivors because they were tasty.

OUT:
the survivors

IN:
Multi-choice problem: [he]

The gun owner fired at the burglar because he stole items.

OUT:
the burglar

IN:
Multi-choice problem: [they]

Frosted Flakes is tastier than Fiber One because they use frosting on the cereal.

OUT:
Frosted Flakes

IN:
Multi-choice problem: [they]

MIT accepted the students, because they decided that they were the best.

OUT:
MIT