Word choice, also known as diction, is the words a writer chooses to use in their writing based on a number of components.
It wouldn't make sense for a writer to not know the meaning of a word and still use it in their writing, so "meaning of words," is included.
Vocabulary is included as well. Diction and vocabulary are pretty much the same thing.
Level of formality is included because you can tell if a writing is formal or informal based on the word choices the writer uses. For example, if a writer writes "There are a lot of things to do in New York City," that would be informal since there are better words to use than "a lot" and "things." To make it formal, it could be "There are numerous activities to do in New York City."
Therefore, when analyzing word choice the "pronunciation," is not included.
Hope this helps
Friedrich runs, but he's not fast enough. An explosion kills him, too, leaving him face-up on the ground next to Topthorn's body. Still not budging, Joey stands amid the chaos and watches as the last two horses he knows, the Haflingers, escape into the trees.
C. Anyone who knows the answer should speak up now