Answered

what happens during a controlled experiment

A.no observation are made

B.many variables are changed

C.a factor called prediction is changed

D.the results of changing independent variable are observed

what is the correct answer
for this question

Verified Answer :

BoofusMan

The correct answer is D.

In a controlled experiment you have two variables: independent and dependent.
The independent variable is what you're changing, and the dependent variable is the result you get. The dependent variable "depends" on what you make the independent variable.

eyeneedalife

Answer:

The results of changing the independent variable are observed

Explanation:

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