Which is a viable way to combat the effects of drought on the population of sub-Saharan africa?

A proper water pathway that can be connected throughout the different communities in the region/area.

Explanation:

As the area can be a harsh area to live in, a proper durable water pathway system is a viable option to consider for if the residents in the area can fight the dryness of the biome, then they can have a shot at making their climate a little less harsh.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."

answer; interpreting someone's past consistent with present deviance;