The capital city of Assam is:

Tezpur
Jorhat
Silchar
Dispur

The correct answer is: d) Dispur.

Dispur is the capital of the Indian state of Assam. It is located in the central part of the state, on the banks of the Brahmaputra River. Dispur was founded in 1972, and it became the capital of Assam in 1973. The city is home to the state government offices, as well as a number of educational institutions and hospitals.

Tezpur is a city in the Indian state of Assam. It is located in the Sonitpur district, on the banks of the Brahmaputra River. Tezpur is a major cultural and educational center in Assam. The city is home to a number of temples, mosques, and churches. Tezpur is also home to the Tezpur University, which is one of the oldest universities in Assam.

Jorhat is a city in the Indian state of Assam. It is located in the Jorhat district, on the banks of the Brahmaputra River. Jorhat is a major commercial and industrial center in Assam. The city is home to a number of tea gardens, as well as a number of industries. Jorhat is also home to the Jorhat University, which is one of the oldest universities in Assam.

Silchar is a city in the Indian state of Assam. It is located in the Cachar district, on the banks of the Barak River. Silchar is a major commercial and educational center in Assam. The city is home to a number of temples, mosques, and churches. Silchar is also home to the Silchar University, which is one of the oldest universities in Assam.