Problem: OPTIONS:
- static events
- global warming
- that material's properties
- changing phenomenon
- major threat to health
- changing tides
- Animal survival
- isolated events
Q: You are presented with the quiz "Evolution occurs in response to what in life?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "evolution occurs in response to a change in the environment" and "different environments Life is a changing phenomenon". So, what's the best answer to the question?
Answer: changing phenomenon
Problem:OPTIONS:
- prolactin release
- one celled organisms
- hydrating food
- cleaning food
- airing out food
- Electric generators
- a hydraulic system
- dehydrating food

You are presented with the quiz "What can prevent food spoilage?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "dehydrating food is used for preserving food" and "preservatives Preservatives are required to prevent spoilage". So, what's the best answer to the question?
****
A: dehydrating food
You are presented with the quiz "What forms sinkholes?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "sinkholes are formed by precipitation" and "rain is also known as precipitation". So, what's the best answer to the question?
OPTIONS:
- spring
- gasoline
- LEDs
- worms
- dogs
- rain
- rivers
- fruit
rain
You are presented with the quiz "important food for waterfowl supply most of the food consumed by what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "grasses supply most of the food consumed by people worldwide" and "grasses are also important food for waterfowl". So, what's the best answer to the question?
OPTIONS:
- agriculture
- it needs them
- keeps the organism warm
- people worldwide
- our planet
- monkeys in trees
- tigers in the wild
- wolves in nature

Answer: people worldwide
Question: You are presented with the quiz "what carries oxygen-rich blood?" 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 "arteries turn into smaller arteries called arterioles". So, what's the best answer to the question?
OPTIONS:
- humans
- elephants
- arterioles
- ducks
- mammals
- animals
- four limbs
- bears
Answer: arterioles
input: OPTIONS:
- A Greek letter
- waves
- vibrations
- motion
- messengers
- humans
- four limbs
- some mammals Now, answer this question: You are presented with the quiz "Hearing is used for sensing _ by animals?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "hearing is used for sensing sound by animals" and "all sound is caused by vibrations". So, what's the best answer to the question?
A:
output:
vibrations