B: the pre-SIN constant is 1 and the center of symmetry is p (-π/6,2), so the range of m=2 is

C: First, from the constraints of point P, period and φ, W, we get f(x)=sin(x+π/6)+2. So the initial term is π/6 instead of π/3.

D: The function expression has been found in C, which means that the function has indeed increased in the interval.

Hope to give points, thank you!