Answer
a) False
b) False
c) True
Work Step by Step
a) Magnitude is a scalar and is independent of the coordinate system.
b) As direction is determined by the initial and final points, so direction of a vector does not change in different coordinate systems, since initial and final points of a vector does not change.
c) Components of a vector change by changing coordinate system as origin and axes of the coordinate system change, and components are determined by axes of coordinate system, so components may change.