Answer:
B. Computers are used widely in business.
Step-by-step explanation:
Option B is the correct answer. Based on the structure and characteristics of the paragraph, we discover that the topic sentence that fits in is: "Computers are used widely in business."
This is true because we see that employees were being trained in the computer training centers in order to get prepared for the information age. This then means that the computer will be widely used in the information age, therefore, the employees are to get prepared.
Also, we discover that the managers saw computer as a valuable and useful tool in retraining workers to fit in into other subject areas. This means that computers were widely used in other subject areas.