The correct answer is "She doesn't have." This is the correct answer because it uses the correct subject-verb agreement in the present tense. "She" is a singular subject, so it should be followed by the singular form of the verb "to have," which is "has." However, in the negative form, we use the auxiliary verb "does" before the subject "she" and then follow it with "not" and the base form of the verb "have." Therefore, the correct sentence is "She doesn't have."