The following graph shows the production of paddy in the agricultural land available the 6 places S1, S2, S3, S4, S5, S6 (area in hundreds of hectares and production in thousands of tonnes)

Based on the information, the production ratio (production to land) is highest and lowest, respectively, in:

Production Ratio for S1 = $$\frac{765}{415}=1.84$$

Production Ratio for S2 = $$\frac{856}{390}=2.19$$

Production Ratio for S3 = $$\frac{729}{356}=2.04$$

Production Ratio for S4 = $$\frac{964}{550}=1.75$$

Production Ratio for S5 = $$\frac{580}{280}=2.07$$

Production Ratio for S6 = $$\frac{864}{440}=1.96$$

$$\therefore\ $$The production ratio is highest for S2 and lowest for S4

Hence, the correct answer is Option D