Avoid making a performance argument and instead make a coder's case for deep access.

The term "polymorphism" needs to be defined.

Please explain this C++ program, it doesn't have to be long as long as you explain the important parts of the code do. You can explain it line by line and I will give you a good rating. Thank you Activity name: Trinode Restructuring #include "node.h"#include <iostream>using namespace std;class BSTree {    node* root;    int size;     node* create_node(int num, node* parent) {        node* n = (node*) malloc( sizeof(node) );        n->element = num;        n->parent = parent;        n->right = NULL;        n->left = NULL;        return n;    }     bool search(node* curr, int num) {        if (curr == NULL) {            return false;        }                if (num == curr->element) {            return true;        }         if (num < curr->element) {            return search(curr->left, num);        }        return search(curr->right, num);    }     node* search_node(node* curr, int num) {        if (num == curr->element) {            return curr;…

Make an argument that supports the use of deep access rather than shallow access; attempt to avoid making an argument that centres around performance. This may be done by making an argument that supports the use of deep access rather than shallow access.