Select the correct answer.
read this excerpt from robert stawell ball's great astronomers:
though every child may now know more of the actual truths of the celestial motion:
exercised such an astonishing effect on the human intellect for some sixty generati
production. we must look into the career of this wonderful man to discover wherein
him the unchallenged instructor of the human race for such a protracted period.
based on the context of the excerpt, what does the word protracted most clearly mean?
a. seeming to be truthful
b. weighing an excessive amount
c. extending in a specific direction