What is the function job of a vacuole?

Vacuoles are the "storage system" of the cell. They store nutrients, waste, enzymes, and water. They appear as a large, empty, colorless gap. Think of vacuoles as large warehouses that store toxic wastes, or other useful, excessive products. Vacuoles are significantly larger in plant cells than animal cells. The vacuole fills with water and other nutrients and pushes up against the cell wall making the wall stronger and stiffer. This is one reason why if you forget to water your plant the vacuole is not as big and the plant wilts. A vacuole maintains the acidic internal pH of the cell. They also isolate the harmful substances produced by a cell. Vacuoles also protect cells from certain bacteria and destroy any invading bacteria. Vacuoles are surrounded by membranes. In animal cells vacuoles may store food that needs to be digested.

Food cannot pass through membranes until it is broken into smaller particles. The lysosome can fuse with the vacuole membrane and squirt digestive enzymes into the food vacuole to break down what is in there. Your white blood cells do this when they eat invading bacteria. Vacuoles can also store the undigestible wastes until they can fuse with the cell membrane and squirt the wastes outside.

Vacuoles in animal cells can form when the cell membrane surrounds a material and pinches off to bring the substance inside the cell. This process is called endocytosis.
There are no options provided regarding the vacuole. However, the vacuole has many functions in the cell which include maintaining the turgor pressure, keeping harmful substances away from the cell and also maintain an acid internal pH in the cell among other functions.