Question

How many factors should a well-designed experiment test at one time?

A) 1
B) 2
C) 3
D) It depends on the number of experimental variables.

Answer 1

In a well-designed experiment, it is important to test one factor at a time. The correct answer is A) 1.

Step-by-step explanation:

In a well-designed experiment, it is important to test one factor at a time. This allows for a clear understanding of the relationship between the independent variable (the factor being tested) and the dependent variable (the outcome being measured).

Testing multiple factors at the same time can make it difficult to determine the specific influence of each factor on the outcome. By isolating and controlling variables, researchers can accurately attribute changes in the outcome to the independent variable being tested.

Therefore, the correct answer is A) 1.