Which answer best describes the verb tenses in the sentence? while my dad brings the car around, i waited with the grocery cart. a. the verb tenses shift. b. the verb tenses are consistent.

The best answer is that the verb tenses shift.

If the verbs were consistent, they would more appropriately be as follows:
While my dad brings the car around, I wait with the grocery cart.

or, alternatively:
While my dad was bringing the car around, I was waiting with the grocery cart.