A 2005 AP-IPSOS poll found that 21% of American adults surveyed said their child was heavier than

Question:

A 2005 AP-IPSOS poll found that 21% of American adults surveyed said their child was heavier than doctors recommend. The reasons given as the most important contributing factor to the child’s weight problem are summarized in the accompanying table.
Lack of exercise................ 38%
Easy access to junk food 23% Genetics ......12%
Eating unhealthy food 9% Medical condition...... 8%
Overeating.................. 7%
a. Construct a bar chart for the data on the most important contributing factor.
b. Do you think that it would be reasonable to combine some of these contributing factors into a single category? If so, which categories would you combine and why?