1 the velocity of all fluid particles at a given instant time is constant
2 the speed of a fluid particles remains constant
3 the velocity of all fluid particles crossing a given position is constant
4 the velocity of a fluid particles remains constant
Explanation:
C A streamline may be defined as the path, straight or curved, the tangent to which at any point gives the direction of the flow of liquid at that point. Along a streamline flow of fluid the velocity of all fluid particles crossing a given position is constant.