Holding a charity sale to raise funds belongs to ().

Answer d

Analysis of special events means that social service institutions attract public attention to institutions and related events through the service of special events. These special events include major disasters, social crisis events and institutional commemoration activities. Generally, press conferences, seminars, exhibitions, bazaars, concerts and other activities are held to improve the contact opportunities between social service organizations and target groups, so as to increase the amount of fund-raising of organizations.