**Core Concept**
The Central Drugs Standard Control Organization (CDSCO) is responsible for regulating and supervising the manufacture, sale, and distribution of pharmaceuticals and medical devices in India. CDSCO has zonal offices across the country to ensure compliance with national and international standards.

**Why the Correct Answer is Right**
The CDSCO zonal offices play a crucial role in enforcing the Drugs and Cosmetics Act, 1940, and the Rules made thereunder. These offices conduct regular inspections of pharmaceutical manufacturing facilities, laboratories, and warehouses to ensure that they adhere to Good Manufacturing Practices (GMP) and other regulatory requirements. The zonal offices also monitor the quality of drugs and medical devices, and take action against manufacturers and suppliers who fail to meet the required standards.

**Why Each Wrong Option is Incorrect**
* **Option A:** This is incorrect as CDSCO has multiple zonal offices across the country, and the question does not specify a particular zone.
* **Option B:** This is incorrect as the location of the zonal office is not specified, and it is not a known zonal office of CDSCO.
* **Option C:** This is incorrect as it is not a known zonal office of CDSCO, and the question does not specify a particular zone.

**Clinical Pearl / High-Yield Fact**
CDSCO has a total of 14 zonal offices across the country, each responsible for regulating pharmaceuticals and medical devices in a specific region.

**Correct Answer: B. Mumbai**