Option B: 28% of people who prefer plan I are from the 36–45 age group, and 42% of people from the 46–55 age group prefer plan II.
To find the percentage of people preferring plan I from the 36-45 age group, we need to divide the number of responses for Plan I in that group by the total number of responses in that group, and then multiply by 100. So, for ages 36-45:
Percentage of people preferring Plan I = (14 / (14 + 28 + 8)) x 100 = 28%
To find the percentage of people from the 46-55 age group who prefer Plan II, we need to divide the number of responses for Plan II in that group by the total number of responses in that group, and then multiply by 100. So, for ages 46-55:
Percentage of people preferring Plan II = (21 / (27 + 21 + 2)) x 100 = 42%
Rounding these answers to the nearest whole number gives us option B.