What is the most important reason to control the conditions of an experiment?

to make the experiment easier.

to repeat to reduce the amount of data that must be recorded.

because this is necessary for graphing the data.

because this is necessary for the data to be valid.

The correct answer is ‘because this is necessary for the data to be valid’. The results of the experiment could be compromised if the conditions aren't controlled because one of these factors may influence the results without you realising.

Answer;

Because this is necessary for the data to be valid

-The most important reason to control the conditions of an experiment is because this is necessary for the data to be valid.

Explanation;

-In a controlled experiment, the group that is testing the independent variable is called the experimental group. The other group that does not tests this variable is called the control group.

-It is important to make sure that when conducting a controlled experiment to test an hypothesis, all the variables are the same in two test groups apart from the case of independent variable.