- Something hard can be used for protection
- Bone is hard
- So, bone can be used for protection

- Bone can be used for protection
- Skeletal system is made of bones
- Hence, the skeletal system is used to provide protection for animals

- The skeletal system is used to provide protection for animals
- Protecting part of something helps to protect that something
- Therefore, the skeletal system protects parts of an animal in order to protect that animal

- The body is a part of an animal
- Internal organs are a part of the body
- So, internal organs are a part of an animal

- The skeletal system protects parts of an animal in order to protect that animal
- Internal organs are a part of an animal
- Hence, the skeletal system protects internal organs

- The skeletal system protects internal organs
- Most major organs are internal organs
- Hence, the skeletal system protects most major organs

Hence, the skeletal system protects most major organs
Q: Which system of the human body provides protection to most of the major organs?
Context:
- Something hard can be used for protection 
- Most major organs are internal organs 
- The body is a part of an animal 
- Internal organs are a part of the body 
- Bone is hard 
- Protecting part of something helps to protect that something 
- Skeletal system is made of bones