Answer:
d. world trade has grown more rapidly than world output.
Step-by-step explanation:
International trade has been increased and several factors are contributing to it :
a) There is a trend of decline in the cost of trade which includes transportation, currency exchange, etc.
b)Higher growth of goods produced for trading than nontrading products.
c) There is an increase in the per capita income which means now consumers can shift their focus on trading goods.