What would happen if a freshwater fish didn't produce lots of watery urine?
a. the fish would shrivel.
b. the fish would swell.
c. water would move out of the fish by osmosis.
d. water would be pumped out of the fish.

The right answer for the question that is being asked and shown above is that: "c. Water would move out of the fish by osmosis." if a freshwater fish didn't produce lots of watery urine, then water would move out of the fish by osmosis.

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.