I would say A) Coevolution because the two species would evolve in response to one another. Flowers and their pollinators must evolve together. For example, if the flower has a mutation that no longer attracts the bumblebees, it will not reproduce. Then the hummingbird would have to find a new food source.
The mode of evolution in this example is A) Coevolution, as the bumblebee orchids adapt to attract bumblebees for pollination, influencing their evolutionary paths together. This mutual influence showcases how species can evolve traits that benefit their interactions. The relationship between these orchids and bumblebees emphasizes the interconnectedness of species in ecosystems.
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