Question

the cell theory has historically been a basis for the scientific study of cells. however, in recent history a modern cell theory has been developed. which of the following explains why additions to the theory would be allowed? illustrations of cells were produced and published. several scientists confirmed the additions and documented their support. a scientist described what he observed through a new microscope on a television show. cells are always changing, so the theory must change too.

Explanation:

In science, for a theory to be updated or have additions, it needs verification and support from the scientific community. When several scientists confirm the additions and document their support, it meets the scientific - consensus requirement for theory modification. Illustrations alone don't validate a theory addition. A single scientist's description on TV without peer - review isn't sufficient. Cells changing doesn't directly mean the theory must change without proper scientific evidence.

Answer:

Several scientists confirmed the additions and documented their support.