Final answer:
Bees, butterflies, and birds are all associated with springtime and flowers, as they perform the essential role of pollinators. Flowers attract these pollinators through specific features like color, scent, and nectar. The mutual relationship between them is vital for the reproduction of plants and the sustenance of pollinators.
Step-by-step explanation:
When considering which creatures are associated with springtime and flowers, we find that all of the listed options play a role. Bees, butterflies, and birds are all integral pollinators in various ecosystems. White and sweet-smelling flowers with abundant nectar are often pollinated by bees and butterflies due to their attraction to these sensory features. Additionally, birds, such as hummingbirds, are known to pollinate brightly colored, odorless flowers that are open during the day. The relationship between these animals and flowers is a mutual one, where the animals get nectar and pollen for nutrition, while the plants receive the service of cross-pollination, which is crucial for genetic diversity and the production of seeds.