question: Given the fact "quartz scratches glass easily", what is the answer to "to determine how firm a certain mineral may be a person can:"

OPTIONS:
- measure the weight of it
- attempt to leave a mark on it
- crush it to see the inside
- see if it can bounce

answer: attempt to leave a mark on it

question: Given the fact "sweat is used for adjusting to hot temperatures by some animals", what is the answer to "A horse in a field under the summer sun was glistening wet even though it hadn't rained."

OPTIONS:
- the other horses were licking that horse
- sweat glands released liquid to cool off the horse
- sweat glands dried up
- The horse needed a shower and was getting oily

answer: sweat glands released liquid to cool off the horse

question: Given the fact "pushing on the pedals of a bike cause that bike to move", what is the answer to "Pushing on a pedal is an example of"

OPTIONS:
- force
- patching
- practice
- speed

answer: force

question: Given the fact "plants are a source of oxygen through photosynthesis", what is the answer to "What is a source of oxygen through photosynthesis?"

OPTIONS:
- lakes
- car engines
- sunflowers
- people

answer:
sunflowers