Eusebius, Constantine's principal biographer, describes the sign as the Chi Rho<span>, the first two letters in the Greek spelling of the name Christos. After that victory Constantine became the principal patron of Christianity. In 313 he issued the Edict of Milan which granted religious toleration.</span>
I would say it would be the image. You see the image of an ad and it entices you to read the text that goes with it
The answer is D, Articulation.