Answer:
A
Explanation:
A in the context of science, is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. It is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed through observation and experimentation. Theories are built upon a foundation of evidence and are subject to revision or even rejection if new evidence contradicts them. They are the foundation of scientific understanding and are used to explain natural phenomena and make predictions about future observations.