Answer:
Spelling, grammar, punctuation, and capitalization are the answers.
Step-by-step explanation:
Spelling refers to how the words are written properly and it is one of the four areas.
The second one is grammar, which refers to agreement among all the parts of the sentence, such as subject-verb or the correct form of the verbs according to the tense.
Punctuation is the third one, and it refers to how commas, colons, periods, among others, are correctly used in the speech.
Finally, capitalization refers to use capitals in the correct way, such as for names (people, places,) and acronyms, among other elements of the speech.