2. (3 points) Connecting line segments with 4 points on a plane as endpoints, the maximum number of triangles that can be formed in the resulting figure is ().
A. 3
B. 4
C. 6
D. 8
【Analysis】As shown in the figure: 4 small triangles, and then there are 4 larger triangles composed of two triangles, so there are a total of 8 triangles, according to this to solve.
【Solution】Solution: $4+4=8$ (triangles)
Therefore, choose: $D$.