Based on the given passage, answer the question:
What happens due to a mobile phone when a person is busy?

According to the passage, "कई बार तो आप बहुत व्यस्त होते हैं और मोबाइल फोन के कारण व्यवधान पड़ जाता है" (Many times you are very busy and a disturbance is caused due to the mobile phone). Hence, option D is correct.