The correct answer is contractile vacuole.
The contractile vacuole is a water bubble present in the endoplasm of the amoeba. The role of the contractile vacuole is same as the role of the central vacuole in plants.
The contractile vacuole stores the water and the waste material of the cell, along with some mineral and other substance, so, they help in the maintenance of the osmolarity. In case, the walls of the contractile vacuole is damaged, the cell may burst out.
<span>A nephron, ureter, urinary bladder, urethra
NOT:
</span>B ureter, urinary bladder, nephron, urethra
<span>c urinary bladder, urethra, nephron, ureter </span>
<span>d urethra, nephron, ureter, urinary bladde</span><span>
</span>It is also response for the processing to providing necessary nutrients for the body. And takes wastes and other harmful objects delivered to the excretory system for excretion.<span>
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Abiogenesis is another name for spontaneous generation.
The best and most correct answer among the choices provided by the question is the third choice "<span>Epigenetic changes of mother cells are generally maintained in daughter cells; however, they are susceptible to environmental influences." </span>I hope my answer has come to your help. God bless and have a nice day ahead!