In amoeba, osmoregulation is carried out by the

Explanation

In amoebas, osmoregulation is the process of regulating the water content within the cell. This is important because if too much water enters the cell, it can burst, and if too much water leaves the cell, it can shrivel up and die. The correct answer to this question is option C - contractile vacuole. The contractile vacuole is a structure found in many single-celled organisms, including amoebas. It acts like a pump, expelling excess water from the cell and regulating the water balance. When water enters the cell, it collects in the contractile vacuole and is then expelled through a pore in the cell membrane. This process helps to maintain a stable internal environment for the amoeba and prevents it from bursting due to excess water. The other options listed in this question are not involved in osmoregulation. Pseudopodia are extensions of the cell membrane that amoebas use for movement and feeding, while the food vacuole is where food is stored and digested. The nucleus is the control center of the cell, containing genetic information and controlling cell functions, but it is not involved in osmoregulation. Overall, contractile vacuoles are important structures in amoebas that help to regulate the water content within the cell and prevent it from bursting or shriveling up