What is one role of a dairy inspector in relation to milk?

The role of a dairy inspector is centered around ensuring the quality and safety of milk. A key responsibility within this role is to collect milk samples, which allows inspectors to test for contaminants and verify that health standards are being met. This process is essential for protecting public health, as it helps identify potential issues before they reach consumers. Collecting samples is a proactive measure to ensure compliance with regulations governing milk production and distribution.

In contrast to the other options, suggesting improvements can be part of the inspector's role, but it is secondary to the immediate responsibility of ensuring safety through sampling. Selling milk falls outside the inspector's mandate, as their role is to oversee production practices rather than engage in commercial activities. Degrading milk is also not an appropriate function of a dairy inspector; instead, the focus is on maintaining quality and safety standards to ensure consumers receive safe, high-quality products.