Which of the following is an example of connective tissue?

Adipose tissue is an example of connective tissue because it is made up of adipocytes (fat cells) that store energy in the form of fat. Connective tissue serves various functions, including providing support, storing energy, and helping with the body's overall structure. Adipose tissue is specifically involved in energy storage and insulation, which are key roles of certain types of connective tissue.

In contrast, skeletal muscle is classified as muscle tissue, which is responsible for movement. Epithelial tissue serves as a protective layer and is involved in absorption and secretion, but it does not have the characteristic functions of connective tissue. Nervous tissue, on the other hand, is involved in the transmission of electrical signals and information within the body, making it distinct from connective tissue as well. Thus, adipose tissue remains the sole example of connective tissue among the given options.