Step 1: Understand what 'in-place' means. An in-place sorting algorithm sorts the data without needing extra space for another array.
Step 2: Learn about Merge Sort. Merge Sort is a sorting algorithm that divides the array into smaller parts, sorts them, and then merges them back together.
Step 3: Identify the space requirement of Merge Sort. When merging the sorted parts, Merge Sort needs extra space to hold the merged data.
Step 4: Conclude that since Merge Sort requires additional space for merging, it is not an in-place sorting algorithm.
