What are the proteins in the connective tissues of your foot examples of?

transport proteins

antibody proteins

structural proteins

storage proteins

The answer is structural proteins.

There are several types of the connective tissues: bones, ligaments, tendons, cartilage, and adipose tissue. In the foot, among all connective tissues, ligaments and tendons are the most abundant types. Ligaments and tendons mostly consist of densely packed collagen, which is the main structural protein of the connective tissues.