You are presented with the quiz "What converts chemical energy into mechanical energy?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an automobile engine transforms chemical energy into mechanical energy" and "cars have V-8 engines and are functional". So, what's the best answer to the question?

OPTIONS:
- rocks
- batteries
- water vapor
- monkeys
- cats
- a car
- cows
- rockets

Answer: a car
Problem: OPTIONS:
- salmon
- A laser
- streams.
- A prism
- A projector
- A flashlight
- photons
- streams
Q: You are presented with the quiz "What can form a rainbow?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "arainbow is formed by refraction of light by separating light into all different colors" and "when the light waves strike a prism, the rays of light refract, or bend, at different angles". So, what's the best answer to the question?
Answer: A prism
Problem:OPTIONS:
- extinction of a species
- Quality of life
- Nurseries of the ocean.
- asexual reproduction
- By coral exoskeletons
- coral reefs
- sexual reproduction
- wildfires

You are presented with the quiz "What increases biodiversity?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "sexual reproduction increases genetic diversity" and "biodiversity is basically genetic diversity". So, what's the best answer to the question?
****
A: sexual reproduction
You are presented with the quiz "What causes cancer?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "most carcinogens cause cancer by producing mutations in DNA" and "asbestos is a dangerous carcinogen". So, what's the best answer to the question?
OPTIONS:
- the skin
- smoking
- Pollution
- cigarettes
- Asbestos
- Eating too much
- Potatoes
- buffalo sauce
Asbestos
You are presented with the quiz "What type of material is a fossil formed?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if fossils of a water animal or plant are found in a place then that place used to be covered by water in the past" and "most fossils are formed when sediment is deposited by wind or water". So, what's the best answer to the question?
OPTIONS:
- shells
- coral reefs
- In ice
- On a leaf
- unique
- segmented
- On grass
- In sediment

Answer: In sediment
input with options: You are presented with the quiz "What can lead to oxidation of iron in rock?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "chemical weathering causes iron in rock to oxidize" and "low rainfall means slow chemical weathering of rock". So, what's the best answer to the question?
OPTIONS:
- heat energy
- low rainfall
- flow of electrons
- permineralization
- fossil fuels
- harmful substances
- boiling
- evaporation
output:
low rainfall