Problem:
Here is a displacement-time graph of an object which is not moving with simple harmonic motion. But it is still an oscillation and it has a period. period of oscillation
![1847_Displacement-time graph.jpg](https://secure.tutorsglobe.com/CMSImages/1847_Displacement-time%20graph.jpg)
Estimate that period.
A: 0.25s.
B: 0.3 s.
C: 0.5 s.
D: 0.7 s
E: 1.0 s.
F : 2.0 s