Answer:
B). “the swiftest in flight”
D). “fly at such incalculable speed”
E). “no bird can escape them by flight”
Explanation:
Imagery is defined as the literary device that the author employs to provide 'vivid descriptions presenting or suggesting images of sensible objects or figures in discourse.'
In the given excerpt, the details like 'the swiftest in flight,' 'fly at such incalculable speed,' 'no bird can escape them by flight,' are the vivid descriptions that assist in appealing to the readers' senses and help them visualize the represented ideas and understand them effectively. Thus, options B, D, and E are the correct answers.