Q: You are presented with the quiz "Which is a requirement for life?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "oxygen is essential for cellular respiration for all aerobic organisms" and "cellular respiration is a requirement for life". So, what's the best answer to the question?

OPTIONS:
- glucose
- hydration
- sunlight
- scandium
- recovery
- oxygen
- uranium
- radon

A: oxygen
input: OPTIONS:
- solid, liquid, gas
- microorganisms
- electromagnetic energy
- animal behavior
- biological diversity
- an object
- an organism's body
- metabolic reaction Now, answer this question: You are presented with the quiz "what do scientists study?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "ethologists usually study how animals behave in their natural environment" and "ethologists are scientists who study animals in their natural habitats". So, what's the best answer to the question?
A:
output: animal behavior
You are presented with the quiz "What does frozen water break?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "when water freezes , that water expands" and "water in the rocks pushes out when it freezes thus causing the rocks to break". So, what's the best answer to the question?

OPTIONS:
- lake
- ice
- crust
- sky
- rivers
- nektar
- Weight
- rock

Answer: rock
Problem: OPTIONS:
- death
- rabies
- Wealth accumulation
- fire
- erosion
- safety
- mildew
- capitalism
Q: You are presented with the quiz "What can treating water prevent?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "treating water is used to remove harmful substances before drinking" and "some substances can cause severe injury or death if inhaled or touched". So, what's the best answer to the question?
Answer: death
Problem:OPTIONS:
- uterus and vagina
- Chlorophyll
- Epidermis
- a cuticle
- epidermis and dermis
- four limbs
- fur and fat
- critical organs

You are presented with the quiz "Which parts do female duckbill platypus lack?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "female monotremes lack a uterus and vagina" and "monotremes include the duckbill platypus". So, what's the best answer to the question?
****
A: uterus and vagina
Problem:OPTIONS:
- heat
- cold
- sweat
- pain
- forces
- stress
- comfort
- motion

You are presented with the quiz "A response to what occurs when many muscles contract a little at once?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "shivering occurs when many muscles contract a little bit all at once" and "another response to cold is shivering". So, what's the best answer to the question?
****
A:
cold