Is the effort to understand the natural world and how the natural world works. uses as the basis of understanding how the natural world works. A) supernatural evidence B) observable physical evidence C) only past knowledge D) only lab experiments

I believe the answer to this question is b observable physical evidence.

Explanation:

The reason for this is because scientists make predictions and use evidence to back up their hypothesis. If the evidence doesn't support their claim, they make up a new one, until they have gathered enough evidence to support their claim. This can be done through past knowledge, like failures and successes and lab experiments, so it is not only each of them, so the answer cannot be c or d. Out of the two options, a and b, I just thought about it and picked b as the reasonable answer. Please give me feedback on the answer, if it is right or not. Thanks! Hope I helped!

bc blah

explanation:

bc blah

the correct answer is b