Hilt : Sword : : Outwork : ?
Fortress
The first pair, Hilt: Sword, refers to a part of the sword. Outwork, which refers to a section or extension, is logically compared to Fortress. A fortress is a structure or component of defense, similarly to how the hilt is a part of the sword. Hence, the correct answer is a fortress. Thus, the correct answer is (D) Fortress.
Defining the second word in each pair precisely, rather than guessing from a general sense of "structure," makes the part-to-whole relationship clear.
Since an outwork is literally a defensive part built as an extension of a fortress, the pairing that matches Hilt : Sword is Outwork : Fortress.
Hence, the correct answer is (D) Fortress.
