input with options: You are presented with the quiz "Flowers produce spores that can be what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "flowers produce spores that develop into gametophytes" and "unlike the unisexual gametophytes of a moss, a fern gametophyte is bisexual". So, what's the best answer to the question?
OPTIONS:
- pollen
- allow growth
- fertile
- grow
- seeds
- reproduce
- food
- bisexual
output: bisexual

input with options: You are presented with the quiz "what can communicate with sounds, chemicals or visual cues?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "animals can communicate with sounds, chemicals, or visual cues" and "cows are social animals". So, what's the best answer to the question?
OPTIONS:
- cows
- bears
- sheep
- bacteria
- viruses
- humans
- Birds
- clouds
output: cows

input with options: You are presented with the quiz "_ are needed to maintain energy levels " But you don't know the answer, so you turn to your teacher to ask for hints. He says that "arteries generally carry oxygen-rich blood" and "energy levels can plummet due to lack of oxygen-rich red blood cells". So, what's the best answer to the question?
OPTIONS:
- Ligaments
- follicles
- hydration
- environment
- glucose
- pores
- exercise
- Arteries
output: Arteries

input with options: You are presented with the quiz "What can be used for keeping warm?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "thick fur can be used for keeping warm" and "carpet beetle larvae feed on the keratin and chitin commonly found in wool, fur, or feathers". So, what's the best answer to the question?
OPTIONS:
- keratin
- vacuum
- four limbs
- energy
- cold
- engines
- magic
- heat
output:
keratin