Question

Question 3 of 25
Which statement describes a question that can guide the design of a
scientific investigation?
OA. It asks about whether a controlled variable is necessary.
B. It asks about the preferred outcome of the investigation.
C. It asks about how the observations will be organized.
D. It asks about a cause-and-effect relationship between two
variables.

Answer 1

The statement that describes a question that can guide the design of a scientific investigation could be about the necessity of a controlled variable. The correct answer is A.

What is a controlled variable?

It is a variable whose values are controlled by the researcher during the course of experimental investigations.

When designing an experiment, it is necessary to identify the different variables that would be involved for a successful investigation.

Variables can be independent, dependent, controlled, or constant. Identifying the necessary variables will help in designing the experiment.

More on variables can be found here: https://brainly.com/question/15740935

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