Question

Tissues that work together to perform the same function are called ______. A. Cells B. Organ C. Systems D. Organs

Answer 1

They are called B.) Organs .

My reason being is because organs are your kidneys , lungs, and etc.
Cells are not tissue but they are what runs through your blood.

and Systems build up all of those , Organs are a group of things that work together to function a specific part .this is what works together to perform the same functions.

I really hope this helps you a lot :)