Rajiv Kept Forgetting to E-Mail His Family Back Home, Even

Rajiv kept forgetting to e-mail his family back home, even though he felt he should email them when he was on his computer every evening. Finally, his wife scanned a photograph of his mother and father. Now, the photo pops up every time he starts the computer. The first time Rajiv sees the photo, he goes right to his e-mail and sends his folks a quick message. The photo

A) created a wedge of doubt.
B) crystallized an attitude.
C) changed an attitude.
D) did nothing.