Final answer:
The best example of a symbol is a crow that appears every time a character is about to die.
Step-by-step explanation:
The best example of a symbol is option C, a crow that appears every time a character is about to die. A symbol is a literary device that represents an abstract idea or concept. In this case, the crow symbolizes death or danger, and its appearance foreshadows the character's imminent demise.
Learn more about Symbols in literature