Answer:
The correct option is (b)
Step-by-step explanation:
Private carrier is an organization that transports only the products produced by firm that own it.
Such organization's primary business activity is not transporting products from one place to another. In other words, these carriers do not transport goods of other companies.
Companies find having their own carriers cost effective as compared to hiring one.
Therefore, private carrier is a trucking operation that transports goods for the firm that owns it.