C) 6
Step-by-step explanation:
From the given data we can find the constant of proportionality by dividing The number of people by number of cars.
Constant of proportionality =
Taking any point from the table will give the same constant of proportionality as they are proportional quantities.
Constant of proportionality =
This can be written as 6 people per car.
For 10 cars, number of people will be ==60 people.