Explanation:

Let’s break it down step by step:

- Let’s look at the first letters: C, H, L, S. The jumps are:

C (3) ? H (8) [+5],

H (8) ? L (12) [+4],

L (12) ? S (19) [+7].

Checking the pattern, there’s a consistent increase but not in a clear arithmetic sequence. Still, adding the incremental jump (first +5, then +4, then +7), the next logical move is +6 (since increments go 5,4,7, so now 6). S (19) +6 = Y (25).

- The second letters: G, J, P, U.

G (7) ? J (10) [+3],

J (10) ? P (16) [+6],

P (16) ? U (21) [+5].

That’s +3, +6, +5 — the pattern isn’t perfect, but +4 seems logical. U (21) +4 = Y (25), but Y isn’t in any options (but let’s see if it previews as A, next step putting from U to Z then start from A). Instead, notice U+5= Z, maybe the next natural leap for the last slot.

- The third letters: E, I, N, T.

E (5) ? I (9) [+4],

I (9) ? N (14) [+5],

N (14) ? T (20) [+6].

See? +4, +5, +6 — so next is +7. T (20) +7 = 27; as there are only 26 letters, 27 wraps around to A.

Now, let’s check which option fits this:

Option 1: XBZ – X isn’t fitting for first or second letters.

Option 2: YAZ – First letter Y, second A, third Z. Not matching increments.

Option 3: YCA – First letter Y, C doesn’t fit as a +4 to U, but A is correct for third letter.

Option 4: XZY – Again, X and Z are off for first/second position.

Here’s the thing: The only one that fits the increasing sum sequence of letters is YCA.

Correct Answer: Option 3 (YCA)