Our current understanding of evolution is called a theory because

Ait has been supported repeatedly as new discoveries have been made.
Bproven to be exactly true as originally proposed.
Ccorroborated by data that were gathered during a single experiment.
Ddeveloped from the postulates of many scientists.

Verified Answer :

I think that the best answer is a. it has been supported repeatedly as new discoveries have been made

A scientific theory needs to be corroborated by data from numerous experiments (or observations) and new discoveries should not have proven it wrong.

The correct answer is A. It has been supported repeatedly as new discoveries have been made

Explanation:

In science, a theory refers to an explanation about some aspect of the nature that has been proven multiple times, with different evidence and usually following the scientific method which makes the explanation classified as valid. This concept differs from a hypothesis which is a possible explanation but not a proven explanation. In the case of evolution, the explanation of it is part of a theory, considering since the theory of evolution was proposed by Charles Darwin in 1859 it has been supported through observations and other experiments, also, other hypothesis or possible explanations about evolution have been proposed, but refused as the results and new discoveries consistently support Darwin's proposal. Thus, our current understanding of evolution based on Darwin's proposal is called a theory because "it has been supported repeatedly as new discoveries have been made".