भारत में प्रजातंत्र है।
Step 1: Meaning of the Hindi sentence.
"भारत में प्रजातंत्र है।" translates to "There is democracy in India."
Step 2: Checking options.
(A) Correct — grammatically and contextually accurate.
(B) Wrong — "India is democracy" sounds incorrect, needs article "a."
(C) Wrong — "Democracy is India" changes the meaning.
(D) Wrong — incorrect word arrangement.
Step 3: Conclusion.
The correct answer is There is democracy in India.
मैं एक पत्र लिखने जा रहा हूँ।