Option 1: The option states that both statements are individually true and that statement II is the correct explanation of statement I. Statement I asserts that super phosphate of lime can be assimilated by plants, while statement II states that super phosphate of lime is soluble in water. While both of these statements are factually correct, statement II being true does not necessarily explain why super phosphate of lime can be assimilated by plants. Therefore, this option is not the correct answer.

Option 2: The option states that both statements are individually true, but statement II is not the correct explanation of statement I. This is the correct answer. Statement I is true as plants can assimilate super phosphate of lime, and statement II is true as super phosphate of lime is soluble in water. However, statement II does not provide a direct explanation for statement I, meaning that statement II is not the correct explanation of statement I.

Option 3: The option states that statement I is true, but statement II is false. This option is incorrect as both statements are in fact true - super phosphate of lime can be assimilated by plants and it is soluble in water.

Option 4: The option states that statement I is false, but statement II is true. This option is also incorrect as