In this letter analogy question, CGK is related to DHL, so you must select the set of letters that stands in the same relation to UYC from the given alternatives.

Introduction / Context:

This is a straightforward letter analogy that involves shifting each letter in the alphabet by a fixed number of positions. The given pair "CGK : DHL" shows how each letter of the first group is transformed to obtain the second group. Your task is to identify and apply the same transformation to the letters UYC and select the correct result from the options.

Given Data / Assumptions:

- First pair: CGK becomes DHL.
- Second pair to complete: UYC becomes ?.
- Alphabet positions: A = 1, B = 2, ..., Z = 26.
- Options: VZD, WZD, WZA, VAE and UXF.
- The transformation must be uniform for all three letters in each group.

Concept / Approach:

We convert each letter in CGK and DHL into its alphabetical position and find the shift. If the shift is the same for C to D, G to H and K to L, then we can apply the same fixed increment to U, Y and C. The result must correspond exactly to one of the given options.

Step-by-Step Solution:

Verification / Alternative check:

To verify, compare VZD with the options. Option A is VZD, which matches our computed letters exactly. The other options differ in at least one letter. Because the shift is consistently +1 for all letters in CGK to DHL, any valid answer must involve a uniform +1 shift from UYC. Only VZD satisfies that requirement, confirming that it is the correct answer.

Why Other Options Are Wrong:

WZD would require a +2 shift for U to become W, but the original example used only a +1 shift, so this is inconsistent.

WZA changes different letters by different amounts and does not preserve the uniform +1 pattern.

VAE introduces letters that cannot be obtained by a simple +1 shift from UYC.

UXF keeps U the same and alters Y and C by different steps, breaking the consistent shift rule.

Common Pitfalls:

A common mistake is to only check the first or second letter and ignore whether the same rule applies to all letters in the group. Another pitfall is forgetting the alphabet order near the end (especially around Y and Z), which can cause errors when shifting letters close to Z. Always verify each letter transformation and ensure the shift is uniform.

Final Answer:

Using a consistent +1 shift for all letters, UYC is transformed into VZD.