Final answer:
Mood refers to a prolonged, less intense, affective state, while emotion indicates a subjective, intense state. The client's overall demeanor and attitude relate to mood, while their current emotional state relates to emotion.
Step-by-step explanation:
Mood refers to a prolonged, less intense, affective state that does not occur in response to something we experience, while emotion indicates a subjective, affective state that is relatively intense and occurs in response to something we experience. Mood states may not be consciously recognized and do not carry the intentionality that is associated with emotion.
Regarding a client's emotional state, mood would be more related to their overall demeanor and attitude, while emotion would reflect their current emotional state. So, option a) The client's overall demeanor and attitude best describes mood, and option b) The client's current emotional state is better related to emotion.