Answer: Be responsible for your education, be responsible for your future.
The best slogan is option A. Option B is not very persuasive, and it puts emphasis on your future job and not on your education. Option C does not have an appealing or persuasive tone. Option D has all the problems of the other two options. However, Option A focuses on the importance of education for the future without placing all the importance on your future job. Moreover, it uses repetition, which is a persuasive rhetorical device.