Answer:
A scientific theory.
Theories are never set in stone, but are widely accepted and have evidence to support them.
A scientific theory
Explanation:
The correct answer to your question is D!
Hope I helped
In metaphase (a), the microtubules of the spindle (white) have attached and the chromosomes have lined up on the metaphase plate. During anaphase (b), the sister chromatids are pulled apart and move toward opposite poles of the cell.
