Final answer:
The correct tense used in the sentence 'Mindy was driving 15 mph over the speed limit when the police pulled her over' is the past progressive tense.
Step-by-step explanation:
The student's question is about identifying the tense used in the sentence 'Mindy was driving 15 mph over the speed limit when the police pulled her over.' The correct tense used in this sentence is the past progressive tense. The past progressive tense is used to describe an ongoing action that was happening in the past at a specific moment.
Learn more about Verb Tenses