Respuesta :
One of the main benefit of a trade bloc is that the member countries can engage into trade among one another in an efficient way.
Option B is correct.
What is trade barrier?
Trade barrier is the limitation being put on the incoming and outgoing of goods and services from or to the country. It depends on the country whether to keep or remove it.
Trade bloc is defined as the contract initiated between the countries in order to increase the trading activities which can be import or export. It can be done when the nations remove the limitations to trade and tariffs. This resulted in free flow of goods and services where import or export has been created. It is a kind of agreement being operated in an independent manner.
Therefore, the explanation written in option B is correct.
Learn more about the trade barrier in the related link:
https://brainly.com/question/27863334
#SPJ5