Answer:
Details.
Explanation:
A play can be defined as a literary work that presents the dialogue between characters, as well as portrayal of fictional and non-fictional events in a theatre.
A character list comprises of both protagonists and antagonists that are featured in a play. A protagonist is the lead, principal or chief (main) character in a story, play or film. Thus, a protagonist refers to the character that is being closely followed by an audience or a reader in order to determine the character's fate at the end of the story or play. An antagonist is a character that opposes the protagonist.
In English literature, fictional stories are used by authors to add details, such as characters’ thoughts and feelings, to a story when some of those details are not known.
Answer: I would contend that the right answer is actually "to fake."
Explanation: Just to elaborate a little on the answer, it can be added that one of the meanings of the verb to affect is to feign, which can be translated as to pretend or to give a false appearance of something. If the character was trying to "conceal certain inconvenient emotions" which, nevertheless, "seemed inclined to assert themselves" by affecting high spirits, he was, therefore, faking those high spirits, in order to hide his true feelings from the people who had just arrived.