The leader who used the phrase "Black Power" quite often and made it popular was B. Stokely Carmichael.
Who was Stokely Carmichael?
He was a Civil Rights Movement leader who was quite involved in the global Pan-African Movement.
Stokely used the phrase "Black Power" to refer to the inherent abilities that Black people had in them. His continued use of the phrase made it popular especially in the mid 1960s.
In conclusion, option B is correct.
Find out more on Stokely Carmichael at https://brainly.com/question/15099324.
