If you are talking about the first air pollution problem its is A, almost about 100 years ago.
1955
In regard to gender issues in sub-Saharan Africa, generally speaking "<span>d. Women had more opportunities open to them than did their counterparts in other societies," although this depended slightly on the specific region and time in question. </span>
Answer:
B. Hear Opposing Viewpoints
Explanation:
Centrism is support of a balance between social hierarchy and social equality. Centrists are not strongly politically left or right wing.