Basically, you want to take the integral of each interval and compare them. The two intervals with the same integral represent equal displacement of the particle. And since delta(x) is always 2, all you have to do is average the initial and final velocities of each interval and multiply by two to find total displacement.
Hope it helped.
Edit to show calculations:
2 * [ (0 + 10)/2 ] = 10 for interval AB 2 * [ (7 + 3)/2 ] = 10 for interval DE
The second part of the question can not be fully answered because it is not proven that there is or isn’t others life forms in this universe. personallyi think that there is but whatva