Answer:
A(n) videoconference allows people at two or more locations to interact via two-way video and audio transmissions simultaneously as well as share documents, data, computer displays, and whiteboards.
Any image that helps you, the reader, understand the text that the visual aid is accompanied with is referred to as a visual graphic or graphic aid.
Too frequently, readers lazily scan or entirely ignore graphs, diagrams, charts, and tables. Grid graphs, tables, bar charts, flow charts, maps, pie diagrams, and drawings and sketches are the most popular. Relationships are displayed using grid graphs. A visual aid should always be used in conjunction with preparation to interest the audience, improve their comprehension of your message, elicit an emotional response, and assist you in communicating it effectively. Charts, diagrams, graphs, maps, flashcards, posters, images, photos, booklets, folders, pamphlets, cartoons, and comics are examples of graphic aids.
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It’s either b or c, but my final answer would be C
A computer uses unallocated space also know as free space to keep a file that has been deleted in its disk until a new file takes it spot and overwrites it.