Read the sentence below and answer the question that follows:
Each economic Sector play the vital role in the nation's economy.
the word underlined in the sentence above is best defined as:
A: decision
B: activity
C: Dollar
D: Part

Please help the underline word is sector

The word underlined in the sentence is best defined as activity.

"Each economic activity play the vital role in the nation's economy".

Explanation:

An economic sector is one in which a good is produced and exchanged for another good or for money, generating the flow and distribution of wealth in a given population.

Economic sectors involve each of the activities that generate goods and services to meet the needs of a population and generate wealth, being the main activities -or sectors- of the economy:

Each one of the economic activities that are carried out in a country contribute to cover the requirements of the population, at the same time that they constitute the economy of this country.

a is the answer i believe.