Which vacuole in the amoeba above is responsible for the regulation the water balance?

A. food vacuole B. digestive vacuole C. contractile vacuole D. nucleus
Are these your choices?
If so the answer is c.

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.