DNA molecules separate into single strands which are then used to construct two identical strands of DNA this process ensures genetic A)consistency
B)variability
C)diversity
D)reduction

a. consistency

Explanation:

Daughter cells are genetically identical to the parent cells

hope this helps

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.