Final answer:
The subject in question highlights the character's realization of their mental confusion resulting from significant isolation and lack of communication, as well as the monotony of family life.
Step-by-step explanation:
The passage in question discusses a character's realization of how a prolonged lack of direct human communication and the monotonous environment of family life has led to a state of confusion. The absence of human interaction is compared to a ship at sea without a compass or sounding line, which is a powerful metaphor for the character's sense of directionlessness. Furthermore, the selection explores the themes of alienation and the disconnection one can feel from their environment and family, often leading to a distorted perception of reality.
Each excerpt provided offers insights into the psychological states of characters who are experiencing varying degrees of isolation, cognitive disarray, and the yearning for human connection. The importance of communication in maintaining mental stability is underscored by the deteriorating conditions of their mental states in the absence of it.