Answer:
Choosing variables and controls or (C)
Step-by-step explanation:
A. Analyzing data - you do that AFTER the experiment.
B. Drawing a conclusion - This is at the very end of the road, and you are just summing everything up.
D. Formulating a question - This is at the very beginning of the scientific process. You have to ask the question before you do anything else.
Hence, the correct answer choice is C. Choosing variables and controls.