Answer:
The correct answer is tissue.
Explanation:
A group of cell which are specialized, similar in structure, and function together in a coordinated manner is known as tissue. There are different types of tissue present in animal and plant cells, for example, in animals the four types of tissue is connective, epithelial, nervous and muscle tissue.
These tissue comes together to form organs like heart, brains, kidney, etc. Two or more tissue types can make an organ. Different tissue performs a different function. For example, nervous tissue helps in transferring nerve impulse, connective tissue connect different tissue. So the correct answer is tissue.