Let's denote the time it takes Jarvis to walk to school as \( w \). According to the information provided, the time to bike to school is \( \frac{1}{3} \) of the time it takes to walk.
Since it takes Jarvis 5 minutes to bike to school, we can set up the relationship:
\[ \frac{1}{3} w = 5 \]
If we multiply both sides of the equation by 3 to solve for \( w \):
\[ w = 3 \times 5 \ w = 15 \]
Thus, the correct equation that can be solved to find \( w \) is:
C. \( \frac{1}{3} w = 5 \)