Can someone help me with physical science ? ill give u my number or snap pls

Capelin are fish found in the atlantic and the arctic oceans. in spring and summer, capelin are usually seen in the region between iceland and greenland. what is the most likely reason for the presence of capelin in these regions? a) these regions are rich in plankton during summer. b) capelin need to migrate from deep to shallow water. c) fishing boats do not visit these regions in the summer. d) capelin need to move into fresh water during this period.