Continue with your mobile number
Solution In the given sentence, the word ‘platelets’ is used incorrectly as it refers to a type of cell in human bodies. The correct words here will be ‘disturbance’ and ‘variation’ that denote some unusual occurrence in planet’s outer layers. The word ‘elementary’ is again incorrect as the sentence requires a noun. The words ‘compounds’ and ‘substances’ are correct words here. Hence, the correct answer is option B.