A theory(1 point)

Responses

is always true.

may be revised or replaced.

is the opening statement of an experiment.

is a problem to be solved.

may be revised or replaced.

A theory is a proposed explanation or framework that is based on evidence and reasoning. It is not always true, as theories can be revised or replaced if new information or evidence emerges. It is different from the opening statement of an experiment, which is usually the hypothesis. A theory can arise from a problem or question that needs to be solved, but it is not synonymous with a problem itself.