Which of the following is an important aspect of floral arrangement maintenance?

Regularly changing the water and trimming the stems is an essential aspect of floral arrangement maintenance because it directly impacts the longevity and health of the flowers. Fresh water helps to prevent bacterial growth, which can clog the stems and impede the flowers' ability to absorb water effectively. Changing the water ensures that the flowers receive the necessary hydration and nutrients, while trimming the stems at an angle can promote better water uptake. This practice not only keeps the arrangement looking vibrant and fresh but also extends its overall lifespan, allowing the floral design to maintain its beauty for a longer period.

In contrast, other practices, such as keeping arrangements in direct sunlight or reusing the same water, may lead to quicker wilting and reduced lifespan of the flowers. High humidity environments can be beneficial to some extent but aren’t necessarily a universal solution for all types of floral arrangements.