The answers are:
1. diction --> author's choice of words, particularly for clarity, effectiveness, and precision
2. tone --> an attitude the author takes toward his or her subject, characters, and readers
3. connotative meaning --> the emotion or association that a word or phrase may arouse
4. denotative meaning --> the literal or "dictionary" definition of a word.
In other words:
Diction is the choice of words with the purpose of being correct and clear.
Tone is how the author approaches a topic, their attitude toward the topic.
Connotative meaning is a social, cultural, or emotional association made to the word.
Denotative meaning is the "real" meaning of a word. It's the meaning we find when we look up the word on a dictionary.
