Amount of urine produced by the kidneys is dependent on the external temperature of the environment. In summer season, the temperature of the surrounding is warm and more water is lost in sweating so the body produces less urine because body requires water for other functions of the body. In winter season, the temperature of the surrounding environment is cold so urine is produced in high amount.
A is the correct answer, I believe. There are not usually enough doners as there are people who need the organs, so doing this COULD help (though it's gross) ~Hope this helps!
