Plz I need help with 3 and 4

3 d is the correct answer but I am not sure about answer 4 I think the answer should be ans4d because Your kidneys remove wastes and extra fluid from your body. Your kidneys also remove acid that is produced by the cells of your body and maintain a healthy balance of water, salts, and minerals—such as sodium, calcium, phosphorus, and potassium—in your blood. That helps it to stay balance

answer; /// ( shock.(b) head injuries.(c) drug

my biggest life lesson is that if you do something bad/wrong it comes straight back to you karma. one time this kid threw an snowball at me then he slipped on ice now that's karma.

explanation: