Answer:

Introduction:
MRF is commonly known as Madras Rubber Factory, which is a well-known Indian multinational company that specializes in the manufacturing of rubber products. It is one of the leading tire manufacturers in India and has a strong global presence. MRF offers a wide range of products including tires for various vehicles, conveyor belts, and other rubber-based products.

Explanation:
The correct answer for the abbreviation MRF is option 'A', which stands for Madras Rubber Factory. Let's understand why the other options are not correct:

a) Madras Rubber Factory:
- Madras Rubber Factory is the correct and most commonly known expansion of MRF. It is a renowned Indian company that primarily focuses on the production of rubber-based products, especially tires.
- MRF has a long history and was founded in 1946 in Chennai, India. It has grown significantly over the years and has become a trusted brand in the automotive industry.
- The company's main product is tires, which are manufactured for various vehicles like cars, motorcycles, trucks, buses, and agricultural vehicles. MRF tires are known for their durability, performance, and quality.
- Apart from tires, MRF also produces conveyor belts, tubes, and other rubber products. It has a wide distribution network and exports its products to several countries.

b) Machine Rubber Factory:
- Machine Rubber Factory is not the correct expansion of MRF. While MRF does use machines in its manufacturing processes, the abbreviation does not stand for Machine Rubber Factory.
- MRF's primary focus is on rubber products, particularly tires, rather than the manufacturing of machines.

c) Machines and Rabing Factory:
- Machines and Rabing Factory is not the correct expansion of MRF. This option seems to be a combination of unrelated words and does not represent MRF's actual business activities.
- MRF is primarily engaged in the production of rubber-based products and not in the manufacturing of machines or rabing (which is not a recognized term).

d) Machines Ride Factory:
- Machines Ride Factory is not the correct expansion of MRF. This option also seems to be a combination of unrelated words and does not accurately represent MRF's business activities.
- MRF is not involved in the manufacturing of machines or rides. Its main focus is on producing rubber products, especially tires.

Conclusion:
In conclusion, the correct expansion of MRF is Madras Rubber Factory. MRF is a renowned Indian multinational company that specializes in the manufacturing of rubber products, particularly tires. It has a strong global presence and is known for its high-quality and durable products.