Question

Which choice best describes an independent variable in a scientific investigation?

An independent variable is the one variable changed and tested by a scientist in a scientific investigation.

An independent variable is an educated guess that a scientist makes after observing something interesting.

An independent variable is one part of the hypothesis a scientist writes prior to beginning a scientific investigation.

An independent variable is the fastest way to measure the success of a scientific investigation.

Answer 1

A

Step-by-step explanation:

independent variable is the one variable changed and tested