Answer:
B. a character's personality
Step-by-step explanation:
The speaker is expressing their deep disappointment not just in the event that occurred, but more so in the act of lying. This suggests that the character values honesty and integrity, and feels deeply betrayed when lied to. It gives us insight into their moral compass and how they perceive and interact with others. This dialogue does not predict future events (option A) or add humor to the plot (option B). It is a serious reflection on a personal value system.