Answer:
A) Fish Ladders
Step-by-step explanation:
One concern that arises from building a dam is that fish are not able to migrate. One way that fish can gain passage to their destinations is by fish ladders. Fish ladders are structures that are built into the dam and allow fish to swim up and over the dam, so that they can continue their migration. Fish ladders typically consist of a series of pools or steps that the fish can swim up, similar to a staircase. This allows the fish to bypass the dam and continue their journey.