A, according to the waveform diagram, the amplitude A= 10cm, so a is wrong;

B, as shown in the figure: λ=0. 12m, then the period t = λ v = 0.121= 0.12s, t=0. 1s=56T. According to the wave translation method, it can be seen that this series of waves propagate along the positive direction of the X axis. Therefore, B is correct.

C. When the wave propagates along the positive direction of X axis, when t=0. 1s, the particle P at x=2cm vibrates upward, and the velocity is along the positive direction of Y axis, so C is wrong;

D and t = 0.18s =112t, then the passing distance of particle p at x=2cm is s =112× 4× 0.1= 0.6m, so d is correct.

So choose: BD.