1. **Problem:** Find the probability of rolling a two on a fair eight-sided die labeled 1 through 8. 2. **Formula:** Probability of an event = \frac{Number of favorable outcomes}{Total number of possible outcomes} 3. **Explanation:** Since the die is fair, each face has an equal chance of landing face up. 4. **Calculation:** $$\text{Probability} = \frac{1}{8}$$ 5. **Answer:** The probability of rolling a two is $\frac{1}{8}$. Therefore, the correct choice is **A 1/8**.