B: a former slave. because of frederick being a slave in the 1800’s he isn’t ancient. C doesn’t make sense. therefor B is the answer
Answer:
B
Explanation:
'Unfolding a line of thought, step-by-step, to try to convince the
reader of something'
this one makes the most sense and is what i believe the answer your looking for, taking it step-by-step and unfolding a line of thought is how you develop an argument so i am convinced this is the right answer.
To show the progression of inventions
Answer:
Most likely the first option.