The following sentence has been split into four segments. Identify the segment that contains a spelling error.
He wrote his dairy in code so that nobody could understand it.

Correct option is D

Option (d) is the incorrectly spelt word.
Correct spelling is: “diary” – a book in which one keeps a daily record of events and experiences. (डायरी, जिसमें रोज़ के अनुभव लिखे जाते हैं)
The word "dairy" refers to a place where milk is stored or processed (डेयरी). This changes the meaning of the sentence entirely.
Example: She wrote about her travel experience in her diary, not in a dairy.
Parts of Speech:
• Diary – noun (a personal record)
• Dairy – noun (a milk-related place)
Meanings of all the given options:
· (a) so that nobody – Correct phrase (ताकि कोई नहीं)
· (b) could understand it – No error; all spellings are correct
· (c) in code – All words correctly spelt
· (d) dairy – ❌ incorrect spelling in this context; should be diary