It would be A, they both have different properties, as they say it, different functions.
IF "they" are referring to the organelle in the text as "stored in the cell" than we are talking about the Golgi apparatus, so answer D.
Answer:
The major evolutionary changes was overtime Pakicetus had an earbone with a feature unique to whales and an ankle bone that linked it to artiodactyls.
A. A forest fire caused by lightning, which destroys a habitat
Cyclin-dependent kinases (Cdks), along with cyclins, are major control switches at these checkpoints. They are central to cell cycle control; their activation via cyclin mediates progression through all four phases of the cell cycle. p53 is a protein that functions to block the cell cycle if the DNA is damaged