Question3 The main difference between external sort and internal sort is that.. O while the internal sort is designed to be done on the data in main memory, the external sort i designed for the data on the secondary memory while internal sort selects pivot randomly, the external does not while the internal sort is using popular sorting algorithms (eg. Quick Sort, Merge Sort, Insertion 0 Sort, etc.), external sort is not ONone of above Question 4 to w 5 6 7 8 9