Question

in order to be accepted, a scientific theory must be

○ a. widely tested and supported by extensive data

○ b. controversial and cause debate

○ c. based on the results of a single experiment

○ d. in line with all previous historical ideas

Explanation:

A scientific theory needs to be widely tested and have extensive data - support to be accepted. A single - experiment result is not enough, and it doesn't have to be in line with all previous ideas or be controversial.

Answer:

A. widely tested and supported by extensive data