In following question, there may be an error in one part of the sentence. That error part would be your answer. If there would be no error in the sentence, your answer would be ‘No error’.
I was tired (A)/ so I (B)/ lain down. (C)/ No error (D)

Correct option is C

Option (c) contains an error.
Explanation: The verb “lain” is the past participle form of “lie” (to rest). The correct past tense form required here is “lay”.
Correct sentence: I was tired, so I lay down.
Grammatical rule used:
“Lie” (to rest) has the forms: lie – lay – lain.
Use lay for simple past, lain only with perfect tenses (have/has/had).
Rule in Hindi:
"Lie" का अर्थ होता है "लेटना", जिसके रूप हैं:
· Present: lie
· Past: lay
· Past participle: lain
यहाँ simple past की ज़रूरत है, इसलिए “lay” सही है।
Example:
· Yesterday, I lay on the bed for an hour.
· I have lain there for hours. (Perfect tense)