In order to achieve the prestigious "Eat Right Station" certification, railway stations must meet specific standards related to food safety, hygiene, and cleanliness. As of now, a total of 150 railway stations across India have successfully attained this certification.

Breakdown of the answer:

Number of certified railway stations:
- The correct answer to the question is option 'D', which states that 150 railway stations have achieved the "Eat Right Station" certification.

Significance of the certification:
- The certification is a testament to the commitment of these railway stations towards providing safe and healthy food options to passengers.
- It also signifies the adoption of best practices in food management and service.

Criteria for certification:
- To achieve the "Eat Right Station" certification, railway stations must adhere to strict guidelines related to food quality, sanitation, and overall cleanliness.
- The certification process involves rigorous inspections and assessments to ensure compliance with the specified standards.

Impact on passengers:
- Passengers can now have confidence in the quality of food available at these certified railway stations.
- The certification also promotes awareness about the importance of consuming safe and nutritious food while traveling.

Conclusion:
- The "Eat Right Station" certification is a significant achievement for the railway stations that have successfully met the required standards. It reflects a commitment to providing passengers with healthy and hygienic food options during their journey.