Final answer:
Based on the price difference, Marvin should buy the car that costs $4,000.
Step-by-step explanation:
In this question, the subject is Business. The question asks which car Marvin should buy based on their prices. To determine this, Marvin should consider the price difference between the two cars. The difference between $4,600 and $4,000 is $600. Therefore, Marvin should buy the car that costs $4,000 since it is cheaper.