Answer:
Collagen, reticular, and elastic.
Explanation:
Connective tissue are the important tissue present in the body as they connect the one part of body with another. Different type of connective tissue are blood, bone, tendon and cartilage.
The connective tissue consists of ground substance, extracellular matrix and protein fibers. The three main protein fibers of connective tissue are reticular fibers, collagen and elastic fibers. These provide strength to the connective tissue.
Thus, the correct answer is option (D).