Answer:
the criteria used by countries to define whether define a place as 'urban' include population size, population density. type of econimal activity
It would actually be Graph C since a proportional relationship also answers the question of determining the unit rate, slope of the line, and etc.
The unit rate is 5/1, and follows the rate into a slope making it proportional.
Hope I helped! ^-^
Surface temperature of the star affects the color