The insertion sort can be efficiently used to sort subarrays smaller than a certain size during quicksort. true or false?

Insertion sort is a simple sorting algorithm that builds the final sorted array (or list) one item at a time. It is much less efficient on large lists than more advanced algorithms such as quicksort, heapsort, or merge sort. However, insertion sort provides several advantages:

Simple implementation: Jon Bentley shows a three-line C version, and a five-line optimized version[2]
Efficient for (quite) small data sets, much like other quadratic sorting algorithms
More efficient in practice than most other simple quadratic (i.e., O(n2)) algorithms such as selection sort or bubble sort
Adaptive, i.e., efficient for data sets that are already substantially sorted: the time complexity is O(kn) when each element in the input is no more than k places away from its sorted position
Stable; i.e., does not change the relative order of elements with equal keys
In-place; i.e., only requires a constant amount O(1) of additional memory space
Online; i.e., can sort a list as it receives it
Insertion sort
Insertion sort.gif
Animated GIF of the insertion sort[1]
Class
Sorting algorithm
Data structure
Array
Worst-case performance
О(n2) comparisons and swaps
Best-case performance
O(n) comparisons, O(1) swaps
Average performance
О(n2) comparisons and swaps
Worst-case space complexity
О(n) total, O(1) auxiliary

According to my brain it's a rational number because it can be put as a fraction