Which is a sentence fragment?
a. that isn't the way to do it.
b. why exactly are we here?
c. candy and eleanor are outside climbing trees.
d. the rocky surface's deep ridges and sudden bumps

mali had been a state inside of the ghanaian empire. after ghana fell because of invading forces and internal disputes, mali rose to greatness under the leadership of a legendary king named sundiata, the "lion king." the songhai empire, already weakened by internal political struggles, went into decline.