Which of the following sorting methods would be most suitable for sorting a list which is almost sorted?

The most suitable sorting method for sorting a list which is almost sorted would be Insertion Sort.

Here's why:

1. Insertion Sort: This algorithm iterates through the list by consuming one input element at each repetition and growing a sorted output list. At each iteration, it removes one element from the input data, finds the location it belongs within the sorted list, and inserts it there. It repeats until no input elements remain. The reason why it's efficient for almost sorted list is because it can skip over many elements, resulting in a linear time complexity of O(n).

2. Other sorting algorithms like Quick Sort, Merge Sort, Heap Sort have a time complexity of O(n log n) regardless of whether the input is almost sorted or not. Bubble Sort and Selection Sort have a time complexity of O(n^2) which is worse than Insertion Sort for almost sorted lists.

So, considering the time complexity and the nature of the list (almost sorted), Insertion Sort would be the most suitable sorting method.