Question

select the best evidence to support the statement that migrating birds consume food to prepare for their migrations. people visiting yosemite national park will see different bird behaviors depending on the time of year and habitat. during the winter, it is a treat to watch john muirs favorite bird, the american dipper, as it plunges underneath ice in its search for aquatic insects and minnows. during spring and fall, large numbers of migrating birds can be seen and heard as they flock through the vegetation, busily foraging on insects, seeds, berries, or other birds to build their fat supplies to supply themselves with fuel for their long journeys. spring in yosemite is especially exciting, when migrant flocks of warblers, flycatchers, and tanagers with brightly colored feathers and melodic songs grace the landscape. adapted from national park service, \birds.\

Explanation:

To support the statement that migrating birds consume food to prepare for migrations, we look for evidence directly linking their feeding to migration preparation. The relevant sentence is: "During spring and fall, large numbers of migrating birds can be seen and heard as they flock through the vegetation, busily foraging on insects, seeds, berries, or other birds to build their fat supplies to supply themselves with fuel for their long journeys." This shows they eat (forage) to build fat for their migration (long journeys), directly supporting the statement. Other parts describe general bird behaviors or non - migration - related feeding (like the American dipper in winter) or just the presence of migrant birds in spring, not the feeding - for - migration link.

Answer:

During spring and fall, large numbers of migrating birds can be seen and heard as they flock through the vegetation, busily foraging on insects, seeds, berries, or other birds to build their fat supplies to supply themselves with fuel for their long journeys.