The correct answer is: Epithelial tissue.
Epithelial tissue is the most abundant tissue in the body, making up about 60% of the body’s weight. It is a thin layer of cells that covers the surfaces of the body and lines the organs and cavities. Epithelial tissue has many important functions, including protection, absorption, secretion, and excretion.
Connective tissue is the second most abundant tissue in the body, making up about 25% of the body’s weight. It is a diverse group of tissues that provides support and structure to the body. Connective tissue includes bone, cartilage, fat, and blood.
Nervous tissue is the third most abundant tissue in the body, making up about 10% of the body’s weight. It is responsible for controlling and coordinating the body’s activities. Nervous tissue includes the brain, spinal cord, and nerves.
Muscular tissue is the fourth most abundant tissue in the body, making up about 4% of the body’s weight. It is responsible for movement. Muscular tissue includes skeletal muscle, cardiac muscle, and smooth muscle.