Final answer:
The Python program provided uses 3 variables in total: 'maximum', 'i', and 'n'. Thus, the correct answer to the question of how many variables are in the program is C) 3.
Step-by-step explanation:
The code in question is a simple Python program that finds the maximum positive number entered by the user. When we count the variables, we can see the following are being used:
- maximum - to store the current maximum number,
- i - as the loop variable in the range function,
- n - to store the number inputted by the user.
In total, there are 3 variables in the program. Therefore, the correct answer is C) 3.