Explanation:

Let’s get to the bottom of this:

- First, we need to figure out what connects 72 and 14. Looking closer, 7 + 2 = 9, and if we square 9, that’s 81—not 14. If we do 7 - 2, we get 5. No luck.

- What about division? 72 ÷ 14 ˜ 5.14; not seeing a pattern. Maybe subtraction: 72 - 14 = 58, still not matching anything obvious.

- Don’t forget digit sum: 7 + 2 = 9, 1 + 4 = 5. Still nothing clear. What if it’s product of digits? 7 × 2 = 14, and boom—that matches the second number. So, the pattern is: first number digits multiplied gives the second number.

Run through the options:

1. 45 – 20

- 4 × 5 = 20 

2. 92 – 17

- 9 × 2 = 18, not 17

3. 36 – 19

- 3 × 6 = 18, not 19

4. 81 – 80

- 8 × 1 = 8, not 80

The only option matching the relationship is option 1: 45 – 20.

So you nailed it—the answer is option 1. Let’s keep going like this next time.