A(n) is a set of integrated programs that manages the vital business operations for anentire multisite, global organization.1) enterprise resource planning system. 2) expert system 3)management information system 4) decision support system

Option A

Explanation: Enterprise resource planning can be defined as the software that is used by the organization for performing the back end jobs,that are usually very important for business, more efficiently.

Such softwares use integrated applications, that are custom made for specializing in performing tasks such as accounting or inventory control etc.

Thus, from the above we can conclude that  option A is correct.

b. a single paragraph.

a paragraph is a series of sentences that are organized and make sense, and are all related to a single topic . almost every piece of writing you do that is longer than a few sentences should be organized into paragraphs. this is because paragraphs show a reader where the subdivisions of an essay begin and end, and thus the reader see the organization of the essay into subjects in order to be able to understand its main points.