True would be the Correct answer
S s. S s abbs s sbsbs z sbs
The mass would be 51 kg. So b is the right answer.
The object will move if the forces are unbalanced.
Newtons second tells you that when a net force (the unbalanced force) is applied to and object it will produce an acceleration (movement) in direct proportion to the force and in inverse proportion to the mass of the object.