Final answer:
Sepima Clark is recognized as a pioneer leader in the movement for an activity-centered curriculum particularly through her work in citizenship education schools for black Americans.
Step-by-step explanation:
Sepima Clark is best known as an early leader in the movement for an activity-centered curriculum. She played a significant role in education by innovating citizenship education schools. these schools were instrumental in teaching black Americans reading skills and preparing them for literacy tests that were then a requirement for voter registration. As the director of the Highlander Folk School's outreach program Clark trained and recruited teachers for these schools across Appalachia and the South, which was a pivotal movement towards educational reform and civil rights.