Answer: B. The Internet
Concurrent supply chains have been made possible as a result of the internet. Through the internet, important components like inventory management, purchasing, transportation, customer services, production scheduling, vendor relations, and warehousing have been managed effectively. Generally, information and communication technology has helped greatly in reducing human effort and labor cost and the internet has made the entire process unbelievably concurrent. The internet, therefore, facilitates the management of the supply chains using connectivity as its major tool.