Question

a condition in an experiment that can be manipulated by a researcher is called

an hypothesis.

a variable.

the experimental/statistical design.

the environment of the experiment.

Explanation:

• An hypothesis is a testable prediction, not a manipulable condition.
• A variable (specifically an independent variable) is a condition in an experiment that researchers can manipulate to observe its effect on other variables.
• Experimental/statistical design refers to the overall plan of the experiment, not a manipulable condition.
• The environment of the experiment is the setting, not a manipulable condition by definition for this question.

Answer:

B. a variable