Which of these is a characteristic of the inca civilization?

a. astronomers predicted eclipses and developed a 365-day calendar.

b. its capital city had a population larger than any european city of the time.

c. emperors communicated using runners from the capital city of cuzco.

d. scribes painted books and kept records of taxes and territories conquered.

the correct answer is:   "   3.6 % " .

          →   the unemployment rate is:   " 3.6 % " .

explanation:

to calculate the "unemployment rate" :

the "unemployment rate"   =

  [# of people unemployed] /   [working age population]   * 100 %   ;

                =   [9 million] / [250 million]     *   100 % ;

    →     note:   the units of "million" cancel out;

                    since:   " {million} / {million} = 1 " ;

                =   (9 / 250)   * 100 %   ;

                = 0.036 * 100 % ;

                =   3.6 %

answer:   the unemployment rate is:   " 3.6 % " .

the answer is c have a good day

latin america

explanation: