What type of tissue in the body is primarily composed of fat?

Adipose tissue is the primary type of tissue in the body that is composed of fat. It serves several crucial functions, including energy storage, insulation to maintain body temperature, and cushioning to protect organs. Adipose tissue is a specialized form of connective tissue, where fat cells, also known as adipocytes, are the predominant cell type. This tissue can be found in various locations throughout the body, such as under the skin (subcutaneous fat) and around internal organs (visceral fat).

While muscle tissue is involved in movement and has a different composition and function, connective tissue refers to a broader category that supports and binds other tissues, which includes adipose tissue but is not exclusively fat. Cartilage is a resilient and flexible connective tissue that provides structure and support for certain body parts but does not primarily consist of fat. Thus, adipose tissue is the correct answer as it directly relates to fat composition and its biological role in the body.