Answer:
Option D is the correct answer.
Step-by-step explanation:
Option A would help develop a character because by other characters discussing about the first one would provide a different point of view.
Option B is also helpful because if the character talks with another one, both can show particular traits through speaking.
Option C is also helpful because by letting the reader know how the character feels it develops the character's personality.
Finally, Option D is correct because the new events wouldn't necessary show new traits or develop the character.