Answer:
The person who said these lines is the Nurse.
The correct answer is A.
From all of the given options, the best way to depict a character is by indirect characterization.
This refers to providing information about the character's personality and traits through thoughs, actions and dialogue rather than write it down explicitely.
I believe that the answer is active characterization because all of the characters are doing something. For example, the parents cleaned up the kitchen while the children are playing a game.