Final answer:
Paolo's action of sponsoring monthly parties is an attempt to change a Hygiene factor according to Herzberg's two-factor theory.
Step-by-step explanation:
According to Herzberg's two-factor theory, Paolo's action of sponsoring monthly parties to improve employees' relationships with each other is an attempt to change a Hygiene factor. Hygiene factors are related to the physical and psychological work environment and include things like company policies, working conditions, and interpersonal relationships. By focusing on improving relationships, Paolo is addressing a hygiene factor in an effort to increase employee motivation and job satisfaction.