a) Edge distance is measured parallel to direction of stress, while end distance is measured perpendicular to direction of stress

b) Edge distance is measured parallel to direction of stress, while end distance is measured parallel to direction of stress
c) Edge distance is measured perpendicular to direction of stress, while end distance is measured perpendicular to direction of stress
d) Edge distance is measured perpendicular to direction of stress, while end distance is measured parallel to direction of stress

Answer: d
Explanation: Edge distance is distance at right angles to the direction of stress from centre of hole to adjacent edge. End distance is distance in the direction of stress from centre of hole to end of element.