Select the related group of letters that completes the analogy: GrtK is related to KtrG in the same way as FjbH is related to which of the following letter groups?

Introduction / Context:
This is a letter pattern analogy question. Instead of real words, the question uses groups of letters to test pattern recognition. The pair GrtK : KtrG shows some transformation applied to the first group that produces the second group. We must identify that transformation and then apply the same rule to FjbH to find the correct option. Such problems commonly involve operations like reversing order, shifting letters in the alphabet, or alternating positions.

Given Data / Assumptions:
- The first group is GrtK and the second group is KtrG.
- The letters appear to be rearranged rather than replaced with different alphabet positions.
- The task is to find the same relationship between FjbH and the correct option.
- Case differences are not central to the pattern and only letter order needs to be tracked.

Concept / Approach:
The simplest way to approach this is to look at positions. Write the first set GrtK and then write KtrG beneath it and see how the letters correspond. Observing from left to right, the first letter of the second group is the last letter of the first group, the second letter of the second group is the third letter of the first group, the third letter of the second group is the second letter of the first group, and the fourth letter of the second group is the first letter of the first group. This shows that the pattern is a simple reversal of letter order. Once this is recognised, we can apply the same reversal pattern to the second group FjbH.

Step-by-Step Solution:
Step 1: Write the first pair clearly: GrtK becomes KtrG. Step 2: Compare positions. The leftmost letter G moves to the rightmost position, and the rightmost K moves to the leftmost position. The same happens with the middle letters r and t. Step 3: Conclude that KtrG is simply the reverse order of GrtK. Step 4: Apply the same rule to FjbH. Writing FjbH in reverse order gives HbjF. Step 5: Check the options. Option A is HbjF, which exactly matches the reversed sequence. Step 6: Confirm that no other option represents a simple reversal of FjbH, so option A must be correct.

Verification / Alternative check:
An additional check is to reverse the correct option and confirm that it gives back the original group. Reversing HbjF yields FjbH again, which confirms that the transformation is indeed simple reversal. Performing the same operation on GrtK and KtrG also works, providing a consistent pattern for both pairs. None of the other answer choices provide this exact reversed order relationship, so the solution is uniquely determined.

Why Other Options Are Wrong:
Option B, jHbF, jumbles letters into a different order that does not correspond to a clean reversal. Option C, FbjH, starts with F and ends with H, so it does not reverse the original group. Option D, HjbF, again mixes letters into a pattern that is not simply the reverse of FjbH. Because the analogy is built around reversing, only the option that strictly reverses the letter sequence is valid.

Common Pitfalls:
A common mistake is to search immediately for alphabet shifts or complex encoding without first checking for simple reordering. Learners also sometimes confuse case differences or read too much into upper and lower case letters. The wiser strategy in letter analogies is to start by checking order based transformations like reversing, swapping pairs, or rotating positions, and only then consider numeric shifts in alphabet positions. Doing this reveals the correct pattern quickly in this question.

Final Answer:
Since KtrG is the reverse of GrtK, FjbH must be transformed into its reverse, HbjF, so option A is correct.