答案：D

解析：

Choice D is correct. Approximating several consecutive points on the scatterplot can be used to calculate the percent by which the net sales revenue increased each year.

From the scatterplot, the approximate values of revenue, in billions, in each year from 2004 to 2014 consecutively are 7, 9, 11, 15, 19, 24, 34, 48, 61, 74, and 89. The percent increase from one year to the next is calculated by dividing the difference of revenues with the revenue in the first (base) year. So the percent increases from one year to the next, rounded to the nearest percent, are 29%, 22%, 36%, 27%, 26%, 42%, 41%, 27%, 21%, and 20%, respectively. Of the choices given, 30% best approximates the percent increases from one year to the next.