The statement describes an experimental procedure a scientist could have conducted is twenty tadpoles are exposed to a pesticide, and after three weeks, the same 20 tadpoles are exposed to a different pesticide. The correct option is C.
An experiment is a planned procedure that is done by taking variables. The variables are used in a controlled amount, then the result is noted down.
The control experiment will be in which the variables and the changes will be controlled. The pesticide's amount can be controlled that is given to the tadpoles.
Thus, the correct option is C.
To learn more about the experiment, refer to the link:
https://brainly.com/question/4444046
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