Scientific investigations involve many steps and processes. Which characteristics define a laboratory experiment?

Question

A. hypothesis, models, and calculations
B. test variables, data, and uncontrolled conditions
C. data, conclusions, and unregulated environment
D. independent and dependent variables, data, and controlled conditions

Answer 1

I'll be glad to check your answer.

Answer 2

I think it is A but I am not sure

Answer 3

I disagree.

Answer 4

is it D

Answer 5

Yes.

Answer 6

What is the answer help me

Answer 7

So is it D