Question

during hot seasons, where do fish typically move to find higher dissolved oxygen levels? just at the water surface deeper into cooler water closer to the shallow areas toward the waters surface

Explanation:

Dissolved oxygen in water is related to temperature; cooler water (deeper regions in hot seasons) can hold more dissolved oxygen. Shallow or surface water in hot seasons is warmer, holding less oxygen. So fish move to deeper, cooler water for higher dissolved oxygen.

Answer:

B. deeper into cooler water