Stress the following and divide into syllables (1) communication (2) objectivity (3) historical (4) idiomatic (5) inorganic (6) optimistic (7) promotion (8)motivate (9) confiscate (10) desert (n)(11)insult (n)(12) rebel (v)

To stress and divide the following words into syllables, let's start by understanding what syllables are. Syllables are the basic building blocks of pronunciation. They are created by dividing words into chunks based on their vowel sounds.

Now, let's go through each word, stress the syllables, and divide them accordingly:

1) Communication: com·mu·ni·ca·tion (5 syllables)
2) Objectivity: ob·jec·tiv·i·ty (5 syllables)
3) Historical: his·tor·i·cal (4 syllables)
4) Idiomatic: id·i·o·mat·ic (5 syllables)
5) Inorganic: in·or·gan·ic (4 syllables)
6) Optimistic: op·ti·mis·tic (4 syllables)
7) Promotion: pro·mo·tion (3 syllables)
8) Motivate: mo·ti·vate (3 syllables)
9) Confiscate: con·fis·cate (3 syllables)
10) Desert (n): des·ert (2 syllables)
11) Insult (n): in·sult (2 syllables)
12) Rebel (v): re·bel (2 syllables)

Remember, syllables are determined by the sounds in a word, so make sure to listen to the pronunciation of each word carefully.