Which of the following ensures that the quality of a product is maintained?

The Standards Organisation of Nigeria ensures that the quality of a product is maintained. This is because the Standards Organisation of Nigeria is responsible for developing, publishing and enforcing standards for products and services in Nigeria. They ensure that products meet specific standards of safety, quality, and reliability. The Standards Organisation of Nigeria carries out inspections, tests and certifications of products to ensure they meet these standards. By doing so, they help protect consumers from substandard or unsafe products, promote fair competition among businesses, and enhance the overall quality of products in Nigeria.