A .32 of people who support it are Democrats and .68 of people who support it are Republicans, so of the people who support it a larger percent are Republicans
, so if must be an integer, then the largest integer value it can take on is 19 if can be a rational number (in which case ) or 18 if must also be an integer.
Given that none of the provided answer choices lists 18 or 19, I'd bet there's a typo and you're supposed to find the maximum integer value of , in which case the answer would be B as the largest integer value would be 9.