Hello! is my answer correct?

i posted it this question a while ago and i need some with it : ) i appreciate it so much! i think the answer is the third one.

Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

Which strategy is used by public health to reduce the incidence of food poisoning?