The correct answer is D. The Mac is a fantastic computer.
Step-by-step explanation
The text describes several features of the Mac, a superior performance computer because it "can run multiple programs faster", "(it is) less likely to receive a virus", "has a much sleeker design", and "provides fantastic customer support ". On the other hand, it mentions a PC saying that it is cheaper, however it does not provide enough information to consider this text as a text that compares both products because it does not specify the design and performance characteristics of the PC. So the correct answer is D.