Directions: Select the related pair of letters from the given alternatives.

JK : KL :: PQ : ?

The correct option is QR.

Step-by-step explanation:

1. Analyze the relationship between the first pair of letters, JK and KL:
- J is shifted forward by 1 position in the alphabetical sequence to get K (J + 1 = K).
- K is shifted forward by 1 position in the alphabetical sequence to get L (K + 1 = L).
Therefore, each letter in the pair is replaced by its immediately succeeding letter in the English alphabet.

2. Apply the same rule to the pair PQ:
- Shift P forward by 1 position: P + 1 = Q
- Shift Q forward by 1 position: Q + 1 = R

Following this pattern, PQ corresponds to QR.