This question tests the understanding of public health strategies and ethical considerations in vaccination campaigns. The best approach is B, as it focuses on understanding and mitigating barriers to vaccination, such as access, education, and cultural beliefs. Option A is counterproductive as it would likely decrease vaccination rates further. Option C may not be feasible or ethical without addressing underlying issues first. Option D is harmful and counterproductive, as it could foster distrust. Therefore, the correct answer is B.