I would retake it just to show an effort that you are trying to rectify your low score. You are cutting it close to get a low grade on a pre-req course. Call the admissions office of each prospective school to confirm. With that being said, if your DAT scores, overall GPA, and comm. service is stellar, anything is possible. Some schools are willing to overlook certain aspects of the application to holistically evaluate you as a candidate. Good luck!