The answer is to throw away.
Reject most closely means "to dismiss." The choice "to throw away" would describe how the writer is completely against the idea that he or she is too young to make a difference and "dismisses", disregards and does not accept the idea that he or she is too young to make a difference.
-E :)
a distinct section of a piece of writing, usually dealing with a single theme and indicated by a new line, indentation, or numbering.
Williams employs a humorous and often sarcastic tone to communicate the complexity of representing her composite ethnic identity in a single dish.
