Answer: b. an infrastructure challenge
Explanation:
Developing countries are not as infrautructurally advanced as developed countries. They do not always have good roads, airports in many areas or adequate railway networks.
When goods are being shipped therefore, these pose a problem to the company doing the shipping as they would have to surmount these challenges in order to get their products from point A to be. For instance, as a result of bad roads, more money would have to be spent maintaining trucks that get damaged.