Final answer:
Winston remembers snatching a piece of chocolate from his sister, which symbolizes the moral decay in Orwell's 1984.
Step-by-step explanation:
Winston from George Orwell's novel 1984 remembers snatching a piece of chocolate from his little sister. This memory is a haunting one for Winston as it exemplifies the desperation and moral degradation caused by the oppressive society in which he lives.
The act of snatching the chocolate symbolizes the survival instinct overriding familial bonds and the inherent selfishness that the Party's regime instills in its citizens.