Identify the segment in the sentence which contains a grammatical error. According to the meteorology department, yesterday Assam had the heavier rainfall of the decade.

The error lies in this part ' the heavier rainfall of the decade '. Key Points The given sentence wants to convey the significance of rainfall on a certain day in comparison to others over a decade. Heavier is a comparative adjective form of the adjective heavy. Comparative adjectives are used to compare two people or things. But here the comparison is between rainfall on one day and rainfall on all other days over a decade. Thus, the usage of heavier in the given sentence is incorrect. This makes option 2 the correct answer. So the correct sentence is- According to the meteorology department, yesterday Assam had the heaviest rainfall of the decade. Additional Information To make the sentence correct we need to use the superlative adjective form heaviest.