Final answer:
The C insert() function for the MaxHeap class is correctly completed with the term 'SiftUp'. This operation is necessary after inserting a new element to maintain the max heap property by moving the element up the heap.
Step-by-step explanation:
The correct option to complete the C insert() function for the MaxHeap class is SiftUp. When inserting a new element into a max heap, after adding the element at the end of the heap array, we must ensure the heap property is maintained. This involves comparing the added element with its parent and moving the element up the heap (sifting up or bubbling up) until the parent's value is no longer less than the element's value or until the element reaches the root of the heap. This process is often referred to as a SiftUp operation or BubbleUp in some literature, which are synonymous in the context of heap operation. However, the option a) SiftUp is the conventional term used in most implementations of max heap insert operations.