1 and 2 are fine.
3 has an okay use of the appositive, but the beginning of the sentence is quite awkward:
"Ultimately the question from the theme of whether people are good or evil..."
In addition to putting a comma after the adverb at the beginning, how can you rephrase this part of the sentence to be more concise (less wordy) and clear?
Alot of my sentences are longer than what I usually do, but at the beginning of this sentence I used "Ultimately" as a subordinate conjunction (had to begin a sentence with a subordinating conjunction)but I also had to get an appositive phrase in the sentence also. How about:
Ultimately, whether people are good or evil, THE EXISTENCE OF MORALITY, shows to Jem and Scout that there is a basic good present in most people.
Ultimately, whether people are good or evil, THE Existence of Morality, shows to Jem and Scout there is a basic good that is present in most people.
"Present" can either be a noun or verb, and "good" can be either a noun or adjective. Adding the "that is" reduces the confusion. The first "that" can be omitted to avoid unneeded repetition.
When online, titles can be italicized or underlined by preceding the title with brackets <> containing I or U, respectively and following the title with brackets containing a slash (/) followed by the same letter.
I hope this helps a little more. Thanks for asking.
Excuse my typo. It should be:
Ultimately, whether people are good or evil, The Existence of Morality, shows to Jem and Scout there is a basic good that is present in most people.
"the existence of morality" is suppose to be an appositive phrase for that sentence. It goes with an essay for To Kill a Mockingbird, and I just need to know if it makes sense and if it's an appositive phrase. ( I used Ultimately, as my subordinating conjunction)