Final answer:
Huck Finn prefers nighttime for his plans as it offers concealment, protection, and freedom from societal expectations, themes common in American literature.
Step-by-step explanation:
Huck Finn prefers to carry out his plans under the cover of darkness for several reasons, which are thematically related to the motifs of isolation, disguise, and the juxtaposition of civilization versus wilderness often explored in American literature.
The safety of night provides protection and concealment, essential elements for the adventure and subterfuge in which Huck often finds himself involved. Nighttime also offers a reprieve from the societal expectations and the prying eyes of civilization, a common theme in works such as Huckleberry Finn, where characters often seek freedom from societal norms.
Huck does not want to have his plan set in motion until late in the night because he wants to avoid being seen or caught. By waiting until it's dark, he can move around without being easily spotted by others. This adds an element of secrecy and helps him execute his plan without interference or suspicion.