To determine which fly crossed over the maximum number of juice glasses, we need to examine the trajectories shown in the figure. Analyze each trajectory and count the number of glasses each fly crosses. Each glass crossed corresponds to a point where the fly's path clearly intersects or traverses over a glass.
Fly A: Check trajectory overlap with glasses.
Fly B: Count trajectory crossings over each glass.
Fly C: Examine path intersection points with glasses.
Fly D: Verify trajectory against each glass boundary.
After closely analyzing each path:
Fly
Glasses Crossed
A
2
B
4
C
3
D
1
Based on the analysis, Fly B crossed over the maximum number of juice glasses, totaling 4.