Question

select the part whose main job is to store water in the cell.
nucleus golgi
vacuole rough endoplasmic reticulum

Explanation:

To solve this, we recall the functions of each cell part:

• Nucleus: Contains genetic material, controls cell activities.
• Golgi (apparatus): Modifies, sorts, and packages proteins.
• Vacuole: In plant cells (and some others), stores water, nutrients, and waste.
• Rough endoplasmic reticulum: Involved in protein synthesis.

So the vacuole's main job includes storing water.

Answer:

vacuole