Low temperature and high humidity in refrigeration serve what primary function for flowers?

Maintaining low temperatures and high humidity in refrigeration plays a crucial role in extending the freshness and lifespan of flowers. Cold temperatures slow down the metabolic processes of the plants, which helps to preserve the flowers' vitality and reduces the rate of deterioration. Additionally, high humidity levels reduce water loss from the flowers, preventing wilting and dehydration. This combination creates an optimal storage environment that can significantly prolong the flowers' overall quality and duration of freshness, allowing them to remain vibrant and appealing for a longer time.

The other options, while they may relate to various qualities of flowers, do not accurately describe the primary function of refrigeration in relation to flower preservation.