The correct answer is (a) Oil and Gas sector.
Assam is one of the major oil and gas producing states in India. The state has a large number of oil and gas fields, which are operated by both public and private sector companies. The oil and gas sector is the largest contributor to Assam’s industrial output, accounting for over 50% of the total industrial output.
The tea industry is another important sector of Assam’s economy. Assam is the largest producer of tea in India, and the tea industry is the second largest contributor to Assam’s industrial output. However, the tea industry has been facing a number of challenges in recent years, including declining production and exports.
The handloom and handicrafts sector is also an important sector of Assam’s economy. Assam is known for its traditional handloom and handicraft products, such as silk saris, carpets, and wood carvings. However, the handloom and handicrafts sector has been facing a number of challenges in recent years, including competition from cheap imports and lack of government support.
The tourism sector is a growing sector of Assam’s economy. Assam is home to a number of tourist attractions, such as Kaziranga National Park, Manas National Park, and Dibru-Saikhowa National Park. However, the tourism sector has been facing a number of challenges in recent years, including poor infrastructure and lack of marketing.