In the following question, some parts of the sentence may have errors. Select the option that has the error. If the sentence has no error then select ‘No Error’.
Fewer than one percent of the earth’s water is unsalted and available for human consumption.

Correct option is A

Option (a) contains an error.
The use of “fewer” is incorrect with non-countable nouns like “percent of water”.
The correct word is “less” because “water” is an uncountable noun.
Correct Sentence:
Less than one percent of the earth’s water is unsalted and available for human consumption.
Grammatical rule used:
Use “fewer” with countable nouns (books, people, apples).
Use “less” with uncountable nouns (water, milk, time, money).
Example:
Correct: I have less water in my bottle.
Incorrect: I have fewer water in my bottle.
Information Booster:
Only use “fewer” when you can count individual items (like “fewer bottles of water”).