Answer:
C. The speaker feels his talent has been rendered useless.
Step-by-step explanation:
John Milton (the author of this sonnet) was completely blind and wrote “Sonnet XIX” as his response to his loss of sight. The overall theme of the sonnet is the loss and how he sort of realized the importance of experience. In the beginning of the sonnet, Milton suggests that his talent has been deferred when he became blind. The words, “dark”, “death”, and “useless” (lines 2-4) describe his emotional state.