Answer:
B. How closely a job is related to natural resources.
Step-by-step explanation:
Economic sectors are determined based on how closely the activities that are part of each sector are to natural resources.
The three economic sectors are: the primary or agricultural sector, the secondary of manufacturing sector, and the tertiary of services sector.
The primary sector is directly related to the use of natural resources, while in the secondary sector, these resources become raw materials that are transformed into finished goods.
Finally, the tertiary sector is not directly related to natural resources, because services are those economic transactions in which no exchange of physical goods is made.