The circumference \( C \) of a circle is related to its diameter \( d \) by the formula:
\[ C = \pi d \]
Given that the diameter \( d \) is 17 inches, we can rewrite the equation as:
\[ C = \pi \cdot 17 \]
To solve for \( \pi \), we can rearrange this equation:
\[ \pi = \frac{C}{17} \]
Thus, the expression that best represents the value of \( \pi \) is:
A. \( \frac{C}{17} \)