Introduction:
Ranjan had to spend a significant amount of money on his treatment because he was admitted to a private hospital. This option (option D) is the correct answer as it explains the reason behind his high medical expenses. Let's delve into the details to understand why Ranjan had to bear such expenses.

Explanation:
Admission in a Private Hospital:
Ranjan's choice to seek treatment in a private hospital significantly contributed to his high medical expenses. Private hospitals generally offer better infrastructure, advanced medical equipment, and specialized healthcare services. However, these facilities come at a higher cost compared to public hospitals.

Quality of Treatment:
Private hospitals often provide superior medical care, with access to state-of-the-art technology, highly qualified doctors, and specialized treatment options. This high-quality treatment comes with a higher price tag, leading to increased expenses for the patient.

Availability of Advanced Medical Equipment:
Private hospitals invest in the latest medical equipment and technology to provide accurate diagnoses and effective treatments. The cost of maintaining and upgrading these advanced devices is reflected in the overall expenses incurred by the patients.

Specialized Healthcare Services:
Private hospitals often offer specialized healthcare services catering to specific medical conditions. These services may include advanced surgeries, specialized consultations, and personalized treatment plans. The expertise and specialized care provided by the doctors and staff in private hospitals contribute to the increased cost of treatment.

Private Healthcare Infrastructure:
Private hospitals invest heavily in maintaining a comfortable and luxurious infrastructure to enhance patient experience. This includes spacious rooms, modern amenities, and a higher level of personalized care. The expenses incurred in maintaining such infrastructure are passed on to the patients, making the treatment costlier.

Conclusion:
Ranjan had to spend a significant amount of money on his treatment because he chose to be admitted to a private hospital. The quality of treatment, availability of advanced medical equipment, specialized healthcare services, and the maintenance of private healthcare infrastructure all contribute to the higher expenses associated with private hospitals. It is important for individuals to consider their financial situation and weigh the benefits before opting for treatment in a private hospital.