Study the following graph and answer the question that follows.

In which year is the percentage increase in the revenue,as compared to that in the preceding year, between 1% and 3%?

As per question we want percentage increase in the revenue as compared to the preceding year be between 1% and 3%, 

percentage increased in 2015 = $$\frac{(revenue\ in\ 2015)-\left(revenue\ in\ 2014\right)}{revenue\ in\ 2014}\times\ 100$$

$$\frac{300-260}{260}\times\ 100=15.38\%$$

Similarly in 2016, 

$$\frac{340-300}{300}\times\ 100=13.34\%$$

Similarly in 2017,

$$\frac{350-340}{300}\times\ 100=2.94\%$$

Similarly in 2018, 

$$\frac{375-350}{350}\times\ 100=7.14\%$$

Hence, Option C is correct.