What are the three main parts of a tooth?

The three main parts of a tooth are indeed the crown, neck, and root.

The crown is the visible part of the tooth that is above the gum line and is covered by a hard outer layer known as enamel, which protects the underlying structures. The neck is the area that connects the crown to the root and is typically located at the gum line. It plays a crucial role in the overall structure and stability of the tooth, as it helps anchor the tooth in place. Finally, the root extends below the gum line into the jawbone, providing support and nourishment. It is embedded in the alveolar bone and helps hold the tooth securely in position.

While other options highlight important components of a tooth, they do not accurately represent its three main structural divisions. For example, enamel, dentin, and pulp refer to layers and tissues within the tooth rather than its main structural components. Similarly, terms like gum and crown do not encompass the complete structural profile of a tooth as intended in the question. Understanding the anatomy of a tooth is essential in dental health and hygiene practices.