The cells with similar structure and functions are organised to form a
tissue
The correct option is A
Explanation -
The cells with similar structures and similar function are called tissue.
The incorrect options are - B,C, and D
explanation-
B-They are specialized cells that perform specific functions in the cells. Examples of such organelle are mitochondria, nucleus, plastids, ribosomes and etc.
C-Tissue combines to form organs and perform a specific function in the body. Examples of such organs are the liver, kidney, heart etc.
D- Organism is made up of organs that perform specific functions and are able to carry on the activities of life. Examples of such organisms are human and animals.