You are presented with the quiz "what are rivers?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "rivers are usually larger than streams" and "watersheds are creeks, streams and rivers". So, what's the best answer to the question?

OPTIONS:
- dangerous
- storing water
- watershed
- kalenchoes
- they bend
- rainy
- kinetic
- strong

Answer: watershed
Problem: OPTIONS:
- babies
- sperm
- sugar
- animals
- erection
- eggs
- humans
- pregnancy
Q: You are presented with the quiz "Bacterial infection can inhibit ejaculation of what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "ejaculation occurs when muscle contractions propel sperm from the epididymes" and "bacteria usually cause epididymitis". So, what's the best answer to the question?
Answer: sperm
Problem:OPTIONS:
- It expands
- to make braids
- to wear a scarf
- to attract mates
- When it's cold
- to stay warm
- It remains dormant
- genetic diversity

You are presented with the quiz "Why do some animals have hair that grows longer during the winter?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "some animals' fur grows thicker for staying warm in the winter" and "mammals have hair and fur". So, what's the best answer to the question?
****
A: to stay warm
You are presented with the quiz "What happens to bamboo throughout its life?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "most plants continue to grow throughout their lives" and "bamboos are vigorous, rugged plants". So, what's the best answer to the question?
OPTIONS:
- It helps them survive
- it has cellular respiration
- it dies and comes back to life
- it continues to grow
- it needs no water
- it keeps an organism warm
- flow of electrons
- the body's largest organ
it continues to grow
You are presented with the quiz "What flavor are kids naturally drawn to?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "sugar causes food to taste sweet" and "children are naturally drawn to the sweetness of foods that contain sugar". So, what's the best answer to the question?
OPTIONS:
- Spicy
- coffee
- Sweet
- Sour
- Bitter
- Oak
- corn
- mild

Answer: Sweet
input with options: You are presented with the quiz "Greenhouses are used to what, using the energy from the sun?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "agreenhouse is used to protect plants by keeping them warm" and "energy from the sun keeps the earth warm, enables plants to grow". So, what's the best answer to the question?
OPTIONS:
- heat skin
- evaporation
- protect plants
- cool air
- spread flower seeds
- important habitats
- food and shelter
- reserve water
output:
protect plants