This question asks which town's population is growing at a faster rate.

Since both population graphs are straight lines, we compare their slopes.

The slope of a line represents the rate of change:

From the graph:

Town A starts at about thousand people and increases at a rate of about thousand people per year.

Town B starts at about thousand people and increases at a rate of about thousand people per year.

Even though Town A starts with a larger population, the question asks about the growth rate, not the starting population.

Compare the rates:

So Town B is growing faster than Town A.