1. The problem asks to identify which scenario represents a proportional relationship. 2. A proportional relationship means the ratio between two quantities is constant and the graph passes through the origin (0,0). 3. Let's analyze each option: - A. Gym charges $30 to join plus $10 per month. This is not proportional because of the fixed $30 fee. - B. Taxi charges $4 to start plus $2 per mile. Not proportional due to the fixed $4 start fee. - C. Store sells notebooks for $2 each. This is proportional because cost is directly proportional to number of notebooks with no fixed fee. - D. Phone plan is $50 per month with unlimited data. This is a fixed cost, not proportional to usage. - E. Blank/No Answer is not a scenario. 4. Therefore, the proportional relationship is option C. Final answer: C. A store sells notebooks for $2 each.