Problem:OPTIONS:
- In the winter
- smoking
- icing
- fissures of hot, acidic water
- mechanical weathering
- graptolites
- Inches or fractions of inches.
- rocking

You are presented with the quiz "When ice causes rocks to crack by expanding in openings, what is this called?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "ice wedging is when ice causes rocks to crack by expanding in openings" and "ice wedging is the most important form of mechanical weathering". So, what's the best answer to the question?
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A: mechanical weathering

Problem:OPTIONS:
- nucleus of a cell
- Flying in a plane
- Leaving the lights on
- haploid plants
- a hydraulic system
- Driving a car
- Riding a bike
- power stations

You are presented with the quiz "Which of the following does not contribute to global warming?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "riding a bike does not cause pollution" and "scientific consensus is that pollution causes global warming". So, what's the best answer to the question?
****
A: Riding a bike

Problem:OPTIONS:
- red blood cells
- Energy
- glucose
- sodium
- oxygen
- heat
- lmestone
- Energy.

You are presented with the quiz "What is absorbed from the blood when someone uses the hormone or a medicine containing insulin?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "insulin is a hormone that helps cells absorb sugar from the blood" and "blood Sugar Glucose is sugar". So, what's the best answer to the question?
****
A: glucose

Problem:OPTIONS:
- stamina
- knives
- proteins
- Energy.
- fear
- food
- arrows
- energy

You are presented with the quiz "An animal requires what to succeed at hunting?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an animal requires stamina to succeed at physical activities" and "sheep hunting is a physically demanding hunt". So, what's the best answer to the question?
****
A:
stamina