To answer the multiple-choice question regarding which part of the skeleton is typically composed of four bones that fuse around the age of 25, let's analyze the options given:

1. **Skull**: The skull is composed of many bones that are fully fused at a much younger age, typically during childhood.

2. **Wrist**: The wrist consists of several carpal bones that do not fuse in the same manner as the options we are considering here.

3. **Sacrum**: The sacrum is a bone at the base of the spine formed by the fusion of five sacral vertebrae. This fusion occurs during late adolescence into early adulthood.

4. **Coccyx**: The coccyx, commonly known as the tailbone, is typically made up of four small coccygeal vertebrae that fuse together around the age of 25.

### Final Answer
The correct answer is **coccyx**.

Question

To answer the multiple-choice question regarding which part of the skeleton is typically composed of four bones that fuse around the age of 25, let's analyze the options given:

1. **Skull**: The skull is composed of many bones that are fully fused at a much younger age, typically during childhood.
  
2. **Wrist**: The wrist consists of several carpal bones that do not fuse in the same manner as the options we are considering here.

3. **Sacrum**: The sacrum is a bone at the base of the spine formed by the fusion of five sacral vertebrae. This fusion occurs during late adolescence into early adulthood.

4. **Coccyx**: The coccyx, commonly known as the tailbone, is typically made up of four small coccygeal vertebrae that fuse together around the age of 25.

### Final Answer
The correct answer is **coccyx**.

Knowee AI · Accepted Answer

To answer the multiple-choice question regarding which part of the skeleton is typically composed of four bones that fuse around the age of 25, let's analyze the options given:

1. **Skull**: The skull is composed of many bones that are fully fused at a much younger age, typically during childhood.
  
2. **Wrist**: The wrist consists of several carpal bones that do not fuse in the same manner as the options we are considering here.

3. **Sacrum**: The sacrum is a bone at the base of the spine formed by the fusion of five sacral vertebrae. This fusion occurs during late adolescence into early adulthood.

4. **Coccyx**: The coccyx, commonly known as the tailbone, is typically made up of four small coccygeal vertebrae that fuse together around the age of 25.

### Final Answer
The correct answer is **coccyx**.

What part of the skeleton is typically composed of four bones that fuse around the age of 25?Multiple choice question.skullwristsacrumcoccyx

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