made of only one tissue type.
tissues that do not have cells.
a collection of tissues that carry out a special function.
made up of only one type of cells.
The correct option is C a collection of tissues that carry out a special function.
An organ is a group of tissues in a living organism that has a specific form and function. They may be made of one or more types of tissues working together. Organs are grouped together into organ systems. Heart and kidneys are examples of organs.