My answer is the Vacoules, but I might be wrong.
A. Cytoplasm
(The Nucleus is the control, site of DNA)
Cell wall is in plant cells, giving stability and protecting the cell from rupturing. DNA is stored in the Nucleus, not a organelle.
The answer is Cytoplasm, C.
Their body goes into lactic acid fermentation which is inefficient and does not produce ATP for energy.
2, because a theory is not a law that can not be changed, and new evidence can change a theory.