I'm pretty sure it's D. Preview, plan, predict. I had this question last year.
Like lambs to a slaughter suggests that the slugs (much like the sheep) have no idea that death comes soon, for the slugs either the birds will get them, they get dried out(?), or they risk being found by a human. For the sheep, they’re happy because they have an unlimited supply of food and they’re happy, but they’re being led to their deaths.
THe heart represent guilt because it was all in his head, and the clock represents death approaching, hope this helps.
Answer:
Scout, Jem, Atticus, Dill, Arthur Radley, Bob Ewell, Maudie Atkinson, Calpurnia, Stephanie Crawford (Maybe Uncle Jack, they might mark your answer for not including him)