(a) The requirement is to identify the type of applications
software that a large client is most likely to use. Answer (a)
is correct because enterprise resource planning (ERP) software is
a form of applications software that provides relatively complete
information systems for large and medium size organizations.
Answer (b) is incorrect because a computer operating system is
considered systems software, not applications software. Answer
(c) is incorrect because the central processing unit is the principal
hardware component of a computer, not software. Answer
(d) is incorrect because a value-added network is a privately
owned network whose services are sold to the public.