Can scheduling systems deal with variable shop times, breakdown of equipment, changing requirements, and other uncertainties, or do the schedules become unmanageable?

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.

the answers are

a, b, c, & e.