Question

What is natural selection?
a process that selects variations that help with survival and that spreads the variations to more offspring
a process through which nature selects an individual within a population for extinction
a process that causes all populations to gradually increase in size
a process that causes random variations to appear in the offspring of every generation

Answer 1

i think it's A

Answer 2

"the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution."

should help you.

Source: Google

Answer 3

Thanks.