Explanations:
In India, the production of coins is a significant aspect of the country's monetary system. The Reserve Bank of India (RBI) is responsible for the issuance of coins and banknotes. However, the actual production of coins is carried out by four major mints located in different parts of the country. These mints are:
1. **Mumbai Mint**: Located in Mumbai, this mint is one of the oldest and most prominent mints in India. It has been operational since 1670 and is known for producing coins of various denominations.
2. **Hyderabad Mint**: The mint in Hyderabad is another important facility for coin production. It is located in the city of Hyderabad, the capital of Telangana state. The Hyderabad Mint has been operational since 1968 and is responsible for producing a significant portion of the coins in circulation.
3. **Kolkata Mint**: Situated in Kolkata, this mint is also a major production center for coins. It has been operational since 1757 and is one of the oldest mints in the country.
4. **Chennai Mint**: The mint in Chennai, located in the state of Tamil Nadu, is the newest of the four mints. It began operations in 1985 and has since become a significant contributor to the production of coins in India.
These mints are equipped with state-of-the-art machinery and technology to ensure the quality and security of the coins produced. The production process involves several stages, including design, die-making, blanking, striking, and quality control. Each mint is responsible for producing specific denominations of coins, and they work in coordination with the RBI to meet the country's demand for coins.
The question asks which of the given cities is one of the four cities where coins are produced. The correct answer is Hyderabad, as it is one of the four major mints in India. The other cities listed in the options, such as Bangalore, Chennai, and Pune, are not among the four cities where coins are produced.