Final answer:
Any passengers can ride in the backseat when a student driver with a temporary permit is driving, provided the accompanying driver is a licensed parent or guardian, and all local driving laws are adhered to.
Step-by-step explanation:
When driving with a temporary license and with a licensed driver who is your parent/guardian, the people allowed to ride in the backseat are any passengers, as long as the state or country's specific driving laws are followed. Generally, there is no restriction on who can sit in the backseat, but rules regarding the number of passengers or their age may apply based on the jurisdiction's graduated licensing program. Therefore, it is essential to be aware of and follow the local driving regulations.