input: OPTIONS:
- disturbed
- frustrated
- fitful
- sound
- good
- slow
- Energy.
- energy Now, answer this question: You are presented with the quiz "Healing requires what kind of sleep?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "healing requires rest" and "and, after a full day, relax to a sound and restful sleep in the cool, fresh mountain air". So, what's the best answer to the question?
A:
output: sound
You are presented with the quiz "Fertilization occurs when _ fuse." But you don't know the answer, so you turn to your teacher to ask for hints. He says that "fertilization occurs when a sperm and an egg fuse" and "sperm and eggs are cells known as gametes". So, what's the best answer to the question?

OPTIONS:
- fertile
- sperm ducts
- heat
- eggs
- seeds
- gametes
- pollen
- ovaries

Answer: gametes
Problem: OPTIONS:
- motility
- an object
- voltage
- skull
- motion
- hormones
- symptoms
- energy
Q: You are presented with the quiz "phase changes do not change" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "phase changes do not change mass" and "particles have mass, but mass is energy". So, what's the best answer to the question?
Answer: energy
Problem:OPTIONS:
- wind
- the galaxy
- summer
- spring
- rainfall
- heat
- the moon
- the solar system

You are presented with the quiz "What does the Earth being tilted on its rotating axis cause?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "the Earth being tilted on its rotating axis causes seasons" and "summer is a bold season". So, what's the best answer to the question?
****
A: summer
You are presented with the quiz "What requires heat to survive?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an egg requires warmth to survive" and "heat and warmth help other gift plants". So, what's the best answer to the question?
OPTIONS:
- ice
- fish
- water
- eggs
- animal
- snail
- rocks
- fungi
eggs
You are presented with the quiz "what are formed by carbonic acid in groundwater seeping through rock dissolving limestone" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "acavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone" and "caverns are characterized by enormous rooms". So, what's the best answer to the question?
OPTIONS:
- oceans
- Calcium carbonate
- coral reefs
- enormous rooms
- a solute
- creeks
- Greenhouse gasses
- a hydraulic system

Answer:
enormous rooms