A, because the movement direction of point P is along the negative direction of Y axis and lags behind the point on the right, it is known that the wave propagates along the negative direction of X axis, so A is wrong;

B, because the first arrival of point P at the peak is equivalent to transmitting the wave to x= 1m, then V = XT = 1? 0.30.2 = 3.5m/s, so b is correct;

C, from the waveform diagram, λ=0.8m, then F = V λ = 3.50.8 = 4.375 Hz, so C is wrong;

D, the particle vibrates up and down and does not migrate with the wave, so the distance in 1s is not equal to the Apollo propagation distance, so D is wrong.

So choose: B.