Maria wants to determine which type of disinfectant kills the most bacteria.

Which of the following is the best way for Maria to determine this?

a Interview ten different people to determine which type of disinfectant they prefer.

b Put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

c Ask ten different companies that make disinfectants which type is best.

d Put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate.

Question

Maria wants to determine which type of disinfectant kills the most bacteria.

Which of the following is the best way for Maria to determine this?

a Interview ten different people to determine which type of disinfectant they prefer.

b Put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

c Ask ten different companies that make disinfectants which type is best.

d Put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate.

anonymous · Answer

This one is very obvious, most of these are just opinions where you see D, would be the right scientific way on answering this question. So D is good.