The correct answer is: C. Mobile satellite phones
Mobile satellite phones are strictly forbidden in Ladakh because they can interfere with the military communications in the region.
A postpaid connection is a type of mobile phone plan where you pay for your calls and data usage at the end of each month. A prepaid connection is a type of mobile phone plan where you pay for a certain amount of calls and data usage in advance. Both of these types of connections are allowed in Ladakh.
Mobile satellite phones are different from regular mobile phones in that they use satellites to communicate instead of cell towers. This makes them more reliable in remote areas, but it also means that they can interfere with military communications. For this reason, mobile satellite phones are strictly forbidden in Ladakh.