The atlantic salmon lives in the ocean for most of its life. every year, it returns to freshwater rivers to spawn. based on what you’ve learned so far about membrane proteins, diffusion, and osmosis, what kind of mechanism allows the salmon cells to adapt to freshwater after leaving saltwater?

The correct answer would be osmosis.

Explanation:

When salmon are in freshwater, they are in the hypertonic condition to their surroundings because of more water outside the body cells than inside. The water moves inside the body cells due to osmosis.

So the salmon suffer from water lodging and low salt in the body. It detected by the hypothalamus and regulate pituitary for secreting the hormone. The hormone results in the transport of ions to occur within the gill cells while they absorb salts across the gill cells which ultimately exchange sodium and chlorine ions against the concentration gradients.

Thus, the correct answer would be osmosis.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.