What special meaning do the colors red, white and blue on the American flag hold?

Ablood, sweat and tears
Bpurity, hardiness, vigilance
Cinnocence, valor, justice
Dnone

Verified Answer :

The flag actually didn't have meanings attributed to the colors in it, but the great seal of the United States (the eagle holding arrows and a branch that you can find on our currency).

The seal had these meanings: purity, hardiness, and vigilance.

Since the question asks about the flag, I would say D, none.