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.
$$\text{MAILED}:\text{DELMAI}::\text{FABRIC}:\text{CIRFAB}::\text{JACKET}:?$$

Let's analyze the pattern by splitting the 6-letter word into two equal halves of 3 letters each:
1. **$\text{MAILED}\to \text{DELMAI}$ **:
* First half: $\text{MAI}$
* Second half: $\text{LED}$
* Pattern: The second half is reversed ($\text{LED}\to \text{DEL}$) and placed at the beginning, followed by the first half as it is ($\text{MAI}$).
* Result: $\text{DEL}+\text{MAI}=\text{DELMAI}$

2. **$\text{FABRIC}\to \text{CIRFAB}$ **:
* First half: $\text{FAB}$
* Second half: $\text{RIC}$
* Pattern: Reverse the second half ($\text{RIC}\to \text{CIR}$) and keep the first half as it is ($\text{FAB}$).
* Result: $\text{CIR}+\text{FAB}=\text{CIRFAB}$

Applying the same logic to **$\text{JACKET}$ **:

* First half: $\text{JAC}$
* Second half: $\text{KET}$
* Reverse the second half: $\text{KET}\to \text{TEK}$
* Keep the first half as it is: $\text{JAC}$
* Combine them: $\text{TEK}+\text{JAC}=\text{TEKJAC}$

Therefore, $\text{JACKET}$ will be coded as $\text{TEKJAC}$.