Final answer:
The best topic sentence for the paragraph described is Option A, as it implies the paragraph will detail a chronological change in the use of computers in business.
Step-by-step explanation:
Based on the structure and characteristics of the given paragraph, the most suitable topic sentence would be Option A: The use of computers in business has changed through time. This selection suggests that there will be a chronological development within the paragraph, with the possibility of discussing historical transitions and how these have influenced business practices. A thoughtful choice of a topic sentence is crucial because it sets the stage for the content that follows and helps in maintaining a unified theme throughout the paragraph.