What is the Skeleton?
The skeleton is the internal framework of bones in our body. It plays a crucial role in supporting our structure and protecting our vital organs.

Functions of the Skeleton:
- Support: The skeleton provides a sturdy framework that supports the body and maintains its shape.
- Protection: Bones protect vital organs. For example, the skull encases the brain, while the rib cage shields the heart and lungs.
- Movement: Bones work with muscles to enable movement. When muscles contract, they pull on bones, allowing us to walk, run, and perform various activities.
- Blood Cell Production: Bones, particularly in the marrow, are responsible for producing red blood cells, white blood cells, and platelets.
- Mineral Storage: Bones store essential minerals, such as calcium and phosphorus, which are vital for various bodily functions.

Components of the Skeleton:
The human skeleton is divided into two main parts:
- Axial Skeleton: This includes the skull, vertebral column (spine), and rib cage.
- Appendicular Skeleton: This consists of the limbs and the girdles (shoulder and pelvis) that connect them to the axial skeleton.

Conclusion:
Overall, the skeleton is essential for our survival and daily functioning, making option 'A' the correct answer. It is not just a collection of bones; it is a dynamic system that supports and protects us throughout our lives.