Answer:
Option A: Bird expert Lee Sparks describes Harpy Eagles as "oddly attractive yet insanely dangerous predators."
Step-by-step explanation:
A signal phrase is a sentence that begins with the author's name. It is also characterized by an action verb. The action verb introduces the action taken by the character. For example, the sentence:
Bird expert Lee Sparks describes Harpy Eagles as "oddly attractive yet insanely dangerous predators."
The author is Lee Sparks. The action verb "describes" introduces the content. This makes the reading to be interesting.