Answer: B) say they will vote against a candidate because of the candidate's race.
Explanation: Bradley effect is the effect that causes lack in compatibility of the election results and the opinion poll of voters in accordance with the white candidates whose standing against the minor or non-white candidate .This is also known as Wilder effect which arises due to the race of candidate.
Other option are incorrect because name, gender or staying at home are not the parameters that are considered in the theory of the Bradley effect .Thus, the correct option is option(B).