Question

question 1 of 5 professional vehicle inspections must be completed at least every three months. six months. year. two years.

Explanation:

In the context of vehicle maintenance and safety regulations, professional vehicle inspections (such as for commercial or certain types of vehicles) typically have a requirement of being done at least annually. Among the options, "year" (i.e., every year) is the correct interval for many standard professional vehicle inspection requirements.

Answer:

C. year.