Answer: Prueba
Correct: No salga sola de noche, pero de día pruebe toda la comida local.
Mrs. Sanchez, here are some suggestions for your trip. Do not go out alone at night, but during the day try all the local food. Use your cell phone to take pictures because a large camera attracts attention. Avoid being an easy target. Put your money in the front pocket, not in the back pocket.
Step-by-step explanation: the subjunctive mode is used in expressions of will, doubt or suggestion. As the subject in this sentence is "usted", that is the formal second-person the verb must be conjugated as a third-person. "Usted pruebe". Subjunctive mode.