Th e most important external issue when using social media in emergency management is the disaster response. Disseminating information through social media is very effective especially when there are calamities and a disaster respond from both private and public sector is very urgent.
Probably (Who is the main character of the story?) because exposition " introduces the characters, describes the setting and establishes the problem in the story." Is this helpful?
A. Mouse coputer
B. Disk drive
