Like pie charts, segmented bar charts display of a categorical variable using proportional areas. The accompanying segmented bar charts depict data from a survey on adult literacy. Which of the following is the greatest?

A. The number of people who volunteer once per week or more and test Below Basic on Prose Literacy

B. The number of people who never volunteer and test Proficient on Prose Literacy

C. The number of people who volunteer less than once per week qnd test Basic on Prose Literacy

D. It is impossible to determine which is greatest without knowing the actual number of people at each literacy level

- I have my mind on D. but i wanted to know if i was correct because i have one shot at this :(

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good bye

step-by-step explanation:

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

it is probably the graph on the bottom right.