Which best describes the cell theory? scientists know all there is to know about cells, so the cell theory will not .change. as technological advancements are made, the cell theory may change. a theory, once formulated, cannot be changed. the development of a synthetic cell has caused the cell theory to change.

the cell is the basic structural and functional unit of life

Explanation:

(B) As technological advancements are made, the cell theory may change.

Explanation:

B is the correct answer primarily because the rest are false. Scientists always have more to learn and have more to add to the cell theory and we can't make the definite claim that we know it all. A theory can always be changed and adjusted as more information is learned and considered. And I don't really know about the last one, but it doesn't quite sound right. I can say that B is a true statement, which is why I would confidently mark it as correct.

the index of refraction of the second medium is higher. i just took the test trust me !