Which of the following terms best describes a conceptual scheme in science that is strongly supported, has not yet been found incorrect, and is based on the results of many observations?
a. a scientific modelb. an experimentc. descriptive researchd. a scientific theory or principlee. experimental results

The correct answer is option - D. a scientific theory or principle.

Explanation:

A scientific theory is well supported and explanation of the phenomenon or characteristic of the natural world. It is based on the logic that is proved over time with the help of experiments and observation.

Theories are not guesses but well- substantial that is based on facts and experiments.

Thus, the correct answer is option- d. a scientific theory or principle.

i think that it is plants