Correct option is C
Explanation of the Correct Answer: · The indirect sentence is in past perfect continuous tense ("had been studying").
· In direct speech, past perfect continuous changes to past continuous ("was studying").
· Reporting verb "told" remains unchanged as it is past tense.
Thus, the correct direct speech form is:
"She told her friend, 'I was studying for my examination.'"
Why Are the Other Options Incorrect? · (a) "I had studied" → Incorrect; changes the tense incorrectly to past perfect.
· (b) "I am studying" → Incorrect; "am" is present, but original tense was past perfect continuous.
· (d) "I have been studying" → Incorrect; changes tense to present perfect continuous.
Thus, the correct answer is (c) "I was studying for my examination."