The following sentence has been divided into parts. One of them contains an error. Select the part that contains the error from the given options.
Mr. Raghav / brushes his / teeth four / times the day.

Correct option is B

Option (b) contains the error.
The phrase “times the day” is incorrect. The correct phrase is “times a day” when talking about frequency. The article “a” is used before singular countable nouns to indicate one of many possible instances, which fits here (four times a day).
“ The” is used to refer to a specific noun already known to the reader/listener, which is not the case in this context.
Correct sentence: Mr. Raghav brushes his teeth four times a day.
Grammatical rule used:
Article Usage – “A” is the indefinite article used before general, non-specific singular countable nouns.
When expressing frequency, the standard construction is “[number] times a [time period]”, e.g., twice a week, once a month, four times a day.
Explanation of the grammatical rule in Hindi:
जब किसी कार्य की आवृत्ति (frequency) बताई जाती है, तो “a” article का प्रयोग किया जाता है जैसे:
once a day, twice a week, four times a year.
यहाँ “ a day” सही है, “ the day” नहीं।
Example:
· She drinks coffee three times a day.
· He goes to the gym twice a week.