1. **State the problem:** Find the ratio of the diameter of the large pizza to the diameter of the medium pizza. 2. **Identify the diameters:** Large pizza diameter = 17 in, Medium pizza diameter = 14 in. 3. **Write the ratio:** The ratio of large to medium is $$\frac{17}{14}$$. 4. **Express the ratio in different forms:** - As a fraction: $$\frac{17}{14}$$ - As a colon ratio: 17:14 5. **Check the answer choices:** - A: 14 to 17 (incorrect, reversed) - B: 17:11 (incorrect, wrong medium size) - C: 17/14 (correct) - D: 3:14 (incorrect, unrelated numbers) **Final answer:** The ratio of the diameter of the large pizza to the medium pizza is $$\boxed{\frac{17}{14}}$$ or 17:14.