Final answer:
Without clear context, the answer regarding Levi's survival through a second winter could involve protection against the cold, nourishment, and perhaps mental resilience, but the exact factor could not be confirmed. (Option D).
Step-by-step explanation:
The question pertains to what Levi believed most helped him to survive a second winter. From the context provided, it is not explicitly clear which specific individual named Levi is being referred to, and without additional information, it's not possible to determine whether it's referring to a historical figure, a character in a literary work, or another context where someone named Levi is struggling for survival.
However, in the absence of precise information, if we consider common factors that aid in surviving harsh winters, they usually include adequate shelter or clothing to protect against the cold, sufficient nourishment to maintain health and energy, and potentially the help of others. Surviving a second winter in harsh conditions would likely involve a combination of these elements and possibly the individual's mental resilience and will to survive. (Option D).