Final answer:
The name given to a group of similar cells that perform a special function and together make up an organ is tissue. Tissue is a collection of similar cells working together to carry out specific functions, forming the structure of organs like the heart.
Step-by-step explanation:
The correct answer to what name is given to a group of similar cells that perform a special function and together make up an organ is d. tissue. In the context of the human body, a tissue is a collection of similar cells that work together to carry out a specific function. These cells often, but not always, are of the same cell type. The heart, for instance, is comprised of cardiac muscle tissue, which is responsible for the pumping action. Additionally, the heart contains connective tissue that provides structure and support, as well as nerve tissue that helps regulate heart rate. All these tissues interact to ensure that the heart functions effectively as an organ. Tissues, in turn, are organized into organs, and organs are organized into organ systems, such as the circulatory system in the case of the heart. An organ system is a group of organs working together to perform major functions or meet physiological needs of the body.