Cell differentiation is mostly directly regulated by THE DNA. The DNA is a component of a living cell and is the one that is majorly responsible for directing cell differentiation. DNA molecules carries the genetic information and this information are incorporated into new cells during the process of cell differentiation. Cell differentiation process produced specialized cells.
The correct answer would be C. vacuole. The organelle that helps transport fertilizer from the soil to the leaf would be the vacuole because it can store bubbles, food, or waste.
The answer that provides a definition of voice that is specific to the domain of English language arts would be (the style and tone that makes a writer's work unique).