Robin recently bought voice over internet protocol (voip) phone service. a few of robin's friends bought voip before she did, but many other friends were interested in robin's opinions of the new phone service. robin is a(n) in this product category.

For this particular case and scenario, Robin is actin in the role of an early adopter. So, the correct word to fill in the blank will be "early adopter".

Explanation:

An early adopter is a consumer of a specifical product or service who acquires the service before others and provides useful feedback to companies. In this way, a company can rely on a person in order to refine future releases and improve their processes.

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.