Maruti Udyog Limited, now known as Maruti Suzuki India Limited, is a company that operates in the automobile industry. It is a joint sector company, which means that it is jointly owned by the government and a private company.

Joint Sector:
- A joint sector company is one that is jointly owned and operated by the government and a private company. It is a partnership between the public and private sectors, where both parties have a stake in the company's ownership and management.
- In the case of Maruti Udyog, the government of India and Suzuki Motor Corporation of Japan are the two partners in the joint sector company. The government of India holds a majority stake of 56.21% in the company, while Suzuki Motor Corporation holds a stake of 26%.
- This joint sector arrangement allows for a combination of government expertise and resources with the efficiency and expertise of a private company. It also helps in sharing risks and responsibilities, as well as promoting the growth and development of the industry.

Automobile Industry:
- The automobile industry is a sector that includes the design, development, production, and sale of motor vehicles. It is a crucial sector that contributes significantly to the economy of a country.
- Maruti Udyog is one of the leading automobile manufacturers in India, specializing in the production of passenger cars. It has a wide range of car models catering to various segments of the market.
- The company has a state-of-the-art manufacturing facility in Gurugram, Haryana, where it produces millions of vehicles every year. It also has a robust sales and distribution network across the country, ensuring easy access to its products for customers.

Conclusion:
Maruti Udyog Limited, now known as Maruti Suzuki India Limited, operates in the automobile industry. It is a joint sector company, jointly owned by the government of India and Suzuki Motor Corporation of Japan. This joint sector arrangement allows for a combination of government expertise and resources with the efficiency and expertise of a private company. Maruti Udyog is one of the leading automobile manufacturers in India, specializing in the production of passenger cars.

Answer:-(A) Joint Sector as they are owned and operated by the state and individuals or a group of individuals. Maruti Udyog Limited is an example of joint sector.