Who among the following medieval rulers focused his attention on the construction of sarais (shelter) for the convenience of travellers?

Correct option is B

 The correct answer is (b) Sher Shah Suri.
Sher Shah Suri, a prominent ruler in medieval India, is well-known for his administrative innovations and development of infrastructure that facilitated trade and travel across his empire. Among his notable contributions was the focus on the construction of sarais (inns or rest houses) along major trade routes. These sarais provided shelter and safety for travelers and traders, significantly improving the efficiency and security of trade and travel during his reign. Sher Shah Suri's emphasis on these facilities was part of his broader strategy to strengthen the economy and to maintain effective control over the vast territories under his rule. His efforts in infrastructure development also included the reconstruction of the Grand Trunk Road, which further highlights his commitment to enhancing mobility and commerce in his empire.