Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster.
FREE : GTHI :: GAPS : HCSW :: SOAR : ?

Let's analyze the shifting pattern based on the alphabetical positional values of each letter:
1. **FREE $\to$ GTHI**:
* F (6) $\stackrel{+1}{\to }$ G (7)
* R (18) $\stackrel{+2}{\to }$ T (20)
* E (5) $\stackrel{+3}{\to }$ H (8)
* E (5) $\stackrel{+4}{\to }$ I (9)
The pattern of addition is $+1,+2,+3,+4$.

2. **GAPS $\to$ HCSW**:
* G (7) $\stackrel{+1}{\to }$ H (8)
* A (1) $\stackrel{+2}{\to }$ C (3)
* P (16) $\stackrel{+3}{\to }$ S (19)
* S (19) $\stackrel{+4}{\to }$ W (23)
The pattern $+1,+2,+3,+4$ is verified.

Applying the same pattern to SOAR:

* S (19) $\stackrel{+1}{\to }$ T (20)
* O (15) $\stackrel{+2}{\to }$ Q (17)
* A (1) $\stackrel{+3}{\to }$ D (4)
* R (18) $\stackrel{+4}{\to }$ V (22)

The resulting cluster is TQDV.