B. Members of the population must compete for resources, best describes the hummingbird population.
More about hummingbird population:
Native to the Americas, hummingbirds belong to the biological family Trochilidae. They are distributed from Alaska to Tierra del Fuego and have roughly 361 species in 113 genera, however the majority of the species are in the tropics near the equator.
Their main sources of nutrition are flower nectar (red is their preferred colour), tiny insects like aphids and spiders, and occasionally even pollen and sap. Hummingbirds consume numerous little meals throughout the day, including up to twelve times their body weight in nectar and tiny invertebrates.
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