The correct option is C 8 L
Since the jug should measure the oil of the bucket an exact number of times, the capacity of the jug should be a factor of 24.
Factors of 24 : 1, 2, 3, 4, 6, 8, 12 and 24.
4, 6, 8 are given as option but we have to find the maximum capacity among these given jugs.
So, 8 L jug will be the maximum capacity jug out of the given jugs that is able to measure the 24 L oil.