Question

when a group of tissues work together to perform a specific function, it makes...

an organ

an organ system

a tissue

rewatch

Explanation:

In biology, an organ is defined as a group of tissues that work together to perform a specific function. For example, the heart (an organ) is made up of cardiac muscle tissue, connective tissue, etc., and its function is to pump blood. An organ system is a group of organs working together (e.g., the circulatory system which includes the heart, blood vessels etc.). A tissue is a group of cells with similar structure and function.

Answer:

an organ