Problem:OPTIONS:
- New genetic variation
- Cancer
- cause people to become sick.
- deadly and devastating
- Identical twins
- Random diseases
- death and devastation
- a tree falling

You are presented with the quiz "What happens when there are random changes in the genetic information of an organism?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "mutation creates new genetic variation in a gene pool" and "mutations Mutations are random changes in the genetic information of an organism". So, what's the best answer to the question?
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A: New genetic variation

Problem:OPTIONS:
- Weight
- wet
- long
- small
- taped up
- size
- full
- made

You are presented with the quiz "A tape measure is used to see how what something is?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "atape measure is used to measure length" and "length is how long something is". So, what's the best answer to the question?
****
A: long

Problem:OPTIONS:
- milk
- vapor
- gas
- solid
- calcite
- matter
- rocks
- lipids

You are presented with the quiz "When water molecules expand, what do they begin to form?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "freezing causes a solid to form" and "when water molecules inside the cell freeze, they occupy a larger space". So, what's the best answer to the question?
****
A: solid

Problem:OPTIONS:
- memory cells
- pathogens
- adrenaline
- autism
- warmth
- Energy
- rapid expansion
- positive

You are presented with the quiz "Vaccination produces" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "active immunity results when an immune response to a pathogen produces memory cells" and "vaccination is Active Acquired Immunity". So, what's the best answer to the question?
****
A:
memory cells