Final answer:
Expressives are characterized by high responsiveness and high assertiveness, making them sociable, outgoing, and engaged in expressive behaviors.
Therefore, option 1) is correct.
Step-by-step explanation:
Expressives, as defined in the social styles matrix map, are characterized by having both high responsiveness and high assertiveness. Therefore, the correct answer to who expressives are is: 1) People who are highly responsive and highly assertive. These individuals are sociable and outgoing, often engaged in expressive behavior that sends out signals about their identity. As such, expressive leaders tend to be concerned with process and with ensuring everyone's emotional well-being. They can be warm, excitement-seeking, and exhibit a tendency towards emotional expression. This description aligns with the broader understanding of extroversion within the Five Factor Model of personality.