Fill in the blank in the following sentence by choosing the correct option out of the given ones.
Kalpana is indebted ______ me.

Correct option is C

The correct option to fill in the blank is (c) to.
Detailed Explanation (English):
• The adjective “indebted” is followed by the preposition to when it means thankful or grateful to someone.
• The correct collocation is indebted to someone.
• Therefore, “Kalpana is indebted to me” is correct.
Correct sentence: Kalpana is indebted to me.
Meanings of the other options:
• (a) In: used for position/inside; not used with “indebted” here (में)
• (b) Into: indicates movement inside; incorrect here (के अंदर की ओर)
• (d) For: used for reason/purpose; “indebted for” is not correct in this structure (के लिए)