select the part whose main job is to store water, waste, and nutrients, such as sugar, in the cell.

The part of the cell whose main job is to store water, waste, and nutrients such as sugar is the vacuole. In plant cells, the vacuole is a large, membrane-bound organelle that acts as a storage tank for water and other molecules. It also stores waste products and nutrients, helping maintain cell pressure and structure. This organelle isolates harmful materials and stores important substances within the cell for metabolism and growth.