Fresh milk is often kept in refrigerated vehicles, for distribution to customers in order to
ensure proper share of fresh milk to all customers.
ensure delivery of milk to customers in good time
improve the quality of the milk
ensure that the milk is presented for a longer period
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Discussions (1)

Refrigeration does not make milk last forever. It only slows down spoilage by limiting bacterial growth.
Saying “presented for a longer period” implies it can be displayed or sold much longer, which is misleading because milk still has a limited shelf life even under refrigeration (usually 3–7 days for fresh milk).
The primary goal of refrigeration is to preserve the milk’s quality (taste, safety, nutritional value), not just to extend how long it can sit around.
So, C is correct because it addresses the real scientific reason: quality preservation, whereas D exaggerates the effect.

