Tissue types in the animal body
In the animal body, there are several types of tissues that perform different functions. These tissues can be broadly classified into four main types: muscular tissue, nervous tissue, epithelial tissue, and connective tissue. Each of these tissue types has its own unique characteristics and functions.

Muscular tissue
Muscular tissue is responsible for the movement of the body and its organs. It is composed of cells called muscle fibers that contract and relax, allowing for various types of movement. Muscular tissue can be further divided into three types: skeletal, cardiac, and smooth muscles. While muscular tissue provides structural support and enables movement, it is not primarily a protective tissue.

Nervous tissue
Nervous tissue is responsible for transmitting and processing information in the body. It is composed of neurons, which are specialized cells that can transmit electrical signals. Nervous tissue forms the basis of the nervous system, which controls and coordinates the activities of different body parts. Although nervous tissue plays a crucial role in protecting the body by detecting and responding to stimuli, it is not primarily a protective tissue.

Epithelial tissue
Epithelial tissue is the protective tissue in the animal body. It covers the surfaces of organs, lines body cavities, and forms glands. It is composed of tightly packed cells that are closely joined together, forming barriers that protect underlying tissues from injury, infection, and dehydration. Epithelial tissue also regulates the exchange of substances between the body and its external environment. It can be further classified into different types based on its structure and function, such as squamous, cuboidal, and columnar epithelium.

Connective tissue
Connective tissue provides support and structure to the body. It is composed of cells scattered within an extracellular matrix, which can be solid, semi-solid, or fluid. Connective tissue connects, binds, and supports various organs and tissues in the body. It also plays a role in transporting substances, storing energy, and defending against infections. While connective tissue has a protective function to some extent, it is not primarily a protective tissue.

Therefore, the correct answer is option 'C' - Epithelial tissue, as it is the primary protective tissue in the animal body.