To solve this problem, we need to understand the concept of angular acceleration.$\\$Angular acceleration is defined as the rate of change of angular velocity with respect to time.$\\$In rotational motion, angular acceleration is analogous to linear acceleration in translational motion.$\\$Let's analyze the options given:$\\$• Option 1: Along the radius, away from centre$\\$• Option 2: Along the radius towards the centre$\\$• Option 3: Along the tangent to its position$\\$• Option 4: Along the axis of rotation$\\$Explanation:$\\$• Angular acceleration is a vector quantity that points along the axis of rotation.$\\$• It does not point along the radius or tangent to the circle.$\\$• The direction of angular acceleration is determined by the right-hand rule, which is used to find the direction of angular velocity and acceleration vectors.$\\$Therefore, the correct option is:$\\$Option 4: Along the axis of rotation$\\$This corresponds to the correct understanding of angular acceleration in rotational motion.