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What is a controlled experiment? A. one variable is changed at a time B. none of the variables are changed C. all variables are kept constant D. two variables are changed at a t…

What is a controlled experiment? A. one variable is changed at a time B. none of the variables are changed C. all variables are kept constant D. two variables are changed at a t…
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What is a controlled experiment?

A. one variable is changed at a time

B. none of the variables are changed

C. all variables are kept constant

D. two variables are changed at a time

asked
User Khelben
by
8.5k points

2 Answers

6 votes
c is becsuse it just souds right
answered
User Sathishvj
by
8.0k points
4 votes
A- one variable is changed at time maybe
answered
User Adayzdone
by
8.4k points
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