1. **State the problem:** We need to find the probability that a randomly chosen student earned a grade C. 2. **Recall the formula for probability:** $$\text{Probability} = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$$ 3. **Identify the favorable outcomes:** The number of students who earned a C is given as 29. 4. **Identify the total number of outcomes:** The total number of students is 69. 5. **Calculate the probability:** $$P(C) = \frac{29}{69}$$ 6. **Simplify the fraction if possible:** Since 29 is a prime number and does not divide 69 evenly, the fraction cannot be simplified further. 7. **Convert to decimal and round to three decimal places:** $$P(C) = \frac{29}{69} \approx 0.420$$ **Final answer:** The probability that a randomly chosen student earned a C is **0.420**.