Qual a função dos advérbios no português ?

Read the passage from “the beginnings of the maasai.” now enkai lives at the top of mount kenya, and we maasai still live below, herding cattle down in the plains. it’s not a bad life, especially when enkai is the black god, providing for us. and when the cattle or other children cause problems, i just warn them that they never know when i might suddenly develop my godly powers. the main purpose of the passage is to illustrate the relationship between the maasai and a. mount kenya. b.the children. c. the cattle. d. their god.