To convert the distance from kilometers to miles using the given conversion rate:
1 km = 0.62 miles
Vincent lives 32 km from Frank, so to find the distance in miles:
Distance in miles = Distance in kilometers × Conversion factor Distance in miles = 32 km × 0.62 miles/km = 19.84 miles
Rounding this to the nearest whole number, we get approximately 20 miles.
So, the answer is: C. 20