The cdc reported secondhand smoke statistics for 2007-2008 in the united states: 60.5% of people living below the poverty level were exposed to secondhand smoke compared with 36.9% of people living at or above the poverty level. which of the following statements best summarizes this statistic? a)people in the united states are exposed to more secondhand smoke b)secondhand smoke exposure is higher among people with low incomes c)people in the lower 48 states are exposed to more secondhand smoke d)secondhand smoke exposure is higher among people with high incomes