What would be the most effective substitution for the underlined part of sentence (5)

the answer is:

b) to show the progression of inventions that took place in the bicycling industry.

hope it !

on my last

dr. kings dream speech

explanation:

it was late in the day and hot, and after a long march and an afternoon of speeches about federal legislation, unemployment and racial and social justice, the rev. dr. martin luther king jr. finally stepped to the lectern, in front of the lincoln memorial, to address the crowd of 250,000 gathered on the national mall.

you can't answer this. more information is needed.