The sacrum, the coccyx, and hip bones make up the ______.

• A. pectoral girdle
• B. vertebral column
• C. pelvic girdle
• D. thoracic cage

Answer: (C)

Verified step by step guidance

1. Step 1: Begin by identifying the anatomical structures mentioned in the problem: sacrum, coccyx, and hip bones. These are all located in the lower part of the axial and appendicular skeleton.
2. Step 2: Recall the definition and function of the pelvic girdle. The pelvic girdle is a bony structure that connects the lower limbs to the axial skeleton and provides support for the weight of the body.
3. Step 3: Compare the listed options to the anatomical structures provided. The pectoral girdle is associated with the upper limbs (scapula and clavicle), so it is not correct. The vertebral column refers to the spine, which includes the sacrum but not the coccyx and hip bones as a group. The thoracic cage refers to the rib cage, which is unrelated to the sacrum, coccyx, and hip bones.
4. Step 4: Recognize that the sacrum, coccyx, and hip bones collectively form the pelvic girdle, which is the correct answer based on their anatomical location and function.
5. Step 5: Conclude that the correct answer is 'pelvic girdle' because it matches the description and anatomical grouping of the sacrum, coccyx, and hip bones.