Read the passage "Salmon Reproduction" below. Salmon are born in freshwater streams, then swim out to the ocean. They spend anywhere from one to five years in the ocean before maturing enough to mate.
When it is time, the salmon swim upstream, back to the place where they were born, to mate and lay their own eggs.
If humans build a dam across a stream, how will this most likely affect the salmon that need to cross the dam?
A. It will make the salmon population go down, as they can't mate and lay eggs.
B. It will make the salmon population fight against each other for breeding grounds.
O C. It will make the salmon lay their eggs in the ocean to ensure successful reproduction
D. It will make the salmon lay their eggs in front of the dam, clogging path's downstream,