Line 2 or line 4 sorry if I’m wrong
You'll need a helper variable for this, so depending on your programming language, the solution becomes:
int helper;
helper = arr[i];
arr[i] = arr[j];
arr[j] = helper;
The answer & explanation for this question is given in the attachment below.
Answer:
education software or learning software
Explanation:
You are teaching the smartest animal on earth, and in other words, you are educating them, or making them learn through well-planned instructions. Hence, you are teaching them. And this can be done through education software or e-learning software. Thus the correct option out here is certainly the e-learning software or the education software.