VERY VERY EASY QUESTION. WILL MARK BRAINLIEST

A marine biologist explains that salmon populations change over time because of differential reproduction. What is "differential reproduction"?

Some organisms in a population lay eggs, while others produce sperm.

Some organisms in a population produce more male offspring than others.

Some organisms in a population produce more offspring than others.

Some organisms in a population reproduce in rivers, while others stay in the ocean.