A function that is contained inside another function, the results of which become the argument for the outer function is called a(n):

________ tools gather information from sources such as e-mails, text messages, and tweets and make the information instantly and publicly available for use in emergencies

A) Affective computing B) Crowdsourcing C) Crisis-mapping D) Social networking

E-mail is ________ communication, which means users do not have to communicate at the same time

Fill in the blank(s) with correct word