[单项选择]One of the hottest questions in the study of animal behavior is, "Do animals have emotions" The simple answer is, "Of course they do." Just look at them, listen to them, and, if you dare, smell the odors they emit when they interact with friends and foes. Look at their faces, tails, bodies and, most importantly, their eyes. What we see on the outside tells us a lot about what’s happening inside animals’ heads and hearts.
As a scientist who’s studies animal emotions for more than 30 years, I consider myself very fortunate. Whenever I observe or work with animals, I get to contribute to science and develop social relationships at the same time, and to me, there’s no conflict between the two. While stories about animal emotions abound, there are many lines of scientific support (what I call "social science") about the nature of animal emotions that are rapidly accumulating from behavioral and neurobiological studies (from the emerging field called social neuroscience). Common sense
A. he has studied animal emotions for more than 30 years
B. he is one of the few scientists who study animal emotions
C. he has found scientific evidences to support the notion of animal emotions
D. he hasn’t found any conflict between the study of animal behavior and his interest