Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations. In what way do laboratory experiments primarily differ from other forms of scientific investigations?

A.
Data can only be generated through laboratory experiments, not other forms of investigation.
B.
Studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.
C.
Laboratory experiments involve the identification and control of variables.
D.
A laboratory experiment is the only accepted form of investigation within the scientific community.

1 answer

The correct answer is:

C. Laboratory experiments involve the identification and control of variables.

Laboratory experiments allow for a controlled environment where researchers can manipulate and measure specific variables, making it easier to establish cause-and-effect relationships. This is a primary difference compared to observational field studies and model-building, which may not have the same level of control over variables and often rely on natural occurrences.