Explanation:

Let’s break it down:

- SNAKE is coded as 15. Let’s look for a pattern.

- If you assign each letter its position in the alphabet (S=19, N=14, A=1, K=11, E=5) and add: 19+14+1+11+5 = 50.

- That's not 15. If you add the digits of 50: 5+0=5. Still not 15.

- But what if we do this: Number of letters in SNAKE (5), then multiply the first letter's alphabet position (S=19) by this? 19*5 = 95. Nope, not matching.

- Let’s check the sum of positions for DONATION: D=4, O=15, N=14, A=1, T=20, I=9, O=15, N=14. Total: 4+15+14+1+20+9+15+14 = 92. Not matching any options.

- Now, what if we count vowels? SNAKE has 2 vowels, not leading to 15.

- Maybe they're using the method where A=1, B=2...Z=26, and pick the difference between the sum of the first and last letter? For SNAKE: S(19), E(5), 19-5 = 14. Not matching.

- Is the code the number of straight lines in the spelling? That’s not matching either.

- But one pattern is to count the number of straight lines in the word (some puzzles do this) or count the letters with repeated strokes, but neither fits here.

Let's try S + N + A + K + E = 19+14+1+11+5=50.

Now, for SNAKE: S=19, N=14, A=1, K=11, E=5. Their digital sum: 19(1+9=10), 14(1+4=5), 1, 11(1+1=2), 5. Then sum: 10+5+1+2+5=23. Not 15.

Here’s what stands out—most common with these problems is the sum of the letters, then adding or deducting a standard number. But nothing here gets us 15 in an obvious way.

So let’s check the options for DONATION:

- Option 1: 29

- Option 2: 24

- Option 3: 26

- Option 4: 18

If you just count the letters, DONATION has 8 letters. SNAKE has 5. If we see if SNAKE’s sum is 3 times its length, 5*3=15.

- Now, DONATION: 8*3=24.

- So the code looks like Number of Letters x 3.

Here’s the right answer:

Option 2: 24

In short:

- Each word is coded as three times its number of letters.

- SNAKE (5 letters): 5*3 = 15.

- DONATION (8 letters): 8*3 = 24.

- That’s why 24 is the right pick.