Answer:
a. of widespread entrepreneurship.
Step-by-step explanation:
According to the Institute for Management Development, a business education school that is situated in Lausanne, Switzerland. In its annual rankings on the performance of 63 economies across the globe. In 2018 rated the United States of America as the topmost economy in competitiveness. Based on various data gathered and surveyed, the education school cited "widespread entrepreneurship" as the major reason behind it.