What should we call this one? A Tetris chart, perhaps.
In particular, pay attention to the rightmost three pieces: while the shapes look completely different, the actual proportions ranged from 6 to 8 percent.
Since the proportions add up to 100 percent, this multiple-choice question appears to allow only one answer, even though, as the text said, there were two acceptable answers! It would be useful to label those two choices separately. We'd also want to see how the question was phrased.
Seen differently, the Tetris chart is a 4x25 matrix with each cell representing one hundredth of the respondents.
Reference: "Name, Please? High School Seniors Mostly Don't Know", New York Times, April 19 2009.