Explanation:

- The sentence's context indicates that the literature profoundly impacted the speaker, helping them escape their hopeless state.

- Option 1: "repelling" suggests something that pushes away or offends, which would be unlikely to make someone forget their woes.

- Option 2: "captivating" implies being so interesting or enchanting that it commands full attention. It fits perfectly as something absorbing enough to make one forget their troubles.

- Option 3: "boring" would do the opposite of making someone forget a hopeless state, as it lacks engagement.

- Option 4: "unrealistic" describes something not practical or idealistic, which doesn't imply the same degree of engrossment.