The correct options are
B Tourism brings a sense of preservation and conservation among the people of the nation.
C Tourism is a tertiary occupation.
D Tourism introduces a country's natural, social, and cultural environment to the world.
International tourism represents 7% of the world's exports in goods and services, after increasing by a point from 6% in 2015. Tourism has grown faster than world trade for the past five years. Tourism widely attracts both foreign and domestic travellers, who consume local goods and services that helps to increase the country's economic strength.