Identify the grammatically correct form of the given sentence.
Sentence: Carbon inequality is an measure of the difference in carbon pollution across society.
I. Carbon inequality is a measure of the difference in carbon pollution across society.
II. Carbon inequality is a measure of an difference in carbon pollution across society.

Correct option is C

Option (c) is the correct answer.
· In the original sentence, the article "an" is incorrectly used before a word beginning with a consonant sound ("measure").
· Rule: "An" is used before vowel sounds, and "A" is used before consonant sounds.
· Statement I correctly uses "a measure" (✅).
· Statement II incorrectly uses "an difference", which is grammatically wrong (❌).
�� Information Booster:
Use 'a' before consonant sounds (a cat, a university) and 'an' before vowel sounds (an apple, an hour).