The scope of economic activities can be enlarged by
transportation and trading
business and its promotion
trading and aids to trade
insurance and banking
Correct answer is C
Trade and aids to trade boost economic activities in an economy, in a way that when people are involved in productive ventures, it leads to the viability of the economy.
Trade involves the buying and selling of goods and services, for a compensation called price while aids to trade are the activities which are necessary for smooth flow of goods from producers to consumers.