-Refer to Figure 3

question 20

Multiple Choice

-Refer to Figure 3.1.Which graph best represents the marginal benefit of an activity?

• A) A
• B) B
• C) C
• D) D

---

Definitions:

Blood Cells

Blood cells are the cells found in the blood, comprising mainly red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes), each serving various functions within the body.

Vertebra

One of the small bones forming the backbone, providing support and protecting the spinal cord.

Transverse Processes

Projections on vertebrae where muscles and ligaments attach, part of the bone's anatomy.

Spinous Processes

Bony projections off the back of each vertebra that can be felt through the skin and serve for muscle and ligament attachment.