Final answer:
The difference between direct and indirect service in international logistics is that direct service involves short distances and single mode of transportation, while indirect service involves long distances and multiple modes of transportation.
Step-by-step explanation:
The correct answer is a) long; multiple.
Direct service in international logistics refers to transportation services that involve short distances and a single mode of transportation. This means that goods are transported directly from the point of origin to the destination without any stops or transfers along the way.
On the other hand, indirect services in international logistics involve long distances and multiple modes of transportation. This means that goods may have to be transported through various modes such as ships, planes, trucks, and trains, and may have to make multiple stops or transfers before reaching the final destination.