Final answer:
The correct statement for a body moving with uniform velocity is that the acceleration is zero (a = 0). Uniform velocity implies a constant speed and direction, which means there's no change in velocity and hence no acceleration.
Step-by-step explanation:
If the body is moving with uniform velocity, this means that the speed and direction of the body's motion are constant. In this context, uniform velocity implies that there is no change in velocity, which directly translates to zero acceleration. Therefore, the correct answer to the question would be iii) a = 0.
To clarify the given options: i) u=0 would imply that the initial velocity is zero, which need not be true for uniform velocity since the object could be moving at a constant speed; ii) v=0 would suggest that the final velocity is zero, which again is not required for uniform motion; iii) a=0 is exactly what characterizes uniform velocity because it indicates that there is no acceleration. Thus, the correct answer is c) i and iii, signifying that the initial velocity could be any constant value, and there must be no acceleration.