D. Things that are kept constant.
Controls are used in an experiment where some variable is being changed. By only changing one thing and keeping the others constant they can make sure that any change in the results is caused by the variable and not the constant, since the constant didn’t change.
I would assume D because including a persons thought isn’t really a behavior compared to the others
Answer:
What is your lab over? Can you explain what all you did during this lab and what you observed? If you wrote a hypothesis was it true or untrue why or why not?
Explanation:
These should be some good starting points hope this helps!