Tanya is usually a very conservative, quiet person who never takes risks. During a trip with friends to Las Vegas, Tanya gambles, flirts with strangers, and even volunteers to help a magician during a show. When she returns home, she reverts to her typical, introverted nature. According to Kelly's covariation model, Tanya's behavior in Las Vegas was high in:
a. consistency
b. consensus
c. reactivity
d. distinctiveness