Which was the most popular and widely used means of communication in the colonial era?

Post and telegraph

The correct answer is Option 1: Post and telegraph

During the colonial era, the most popular and widely used means of communication were the postal services and the telegraph. Railways, while crucial for transportation and logistics, were not primarily a means of communication. Wireless and pagers were not available during the colonial period.

"Britishers, apart from railways also contributed in the development of modern communication system. The most widely used mode of communication were posts and telegraphs."