Final answer:
The age at which a client can be asked if they would like to complete the opportunity to register to vote may vary depending on each state's voter registration laws.
Step-by-step explanation:
In most states, individuals can register to vote at the age of 18. Under federal law, every state must allow residents to register to vote at least 30 days before Election Day. However, the specific age at which a client can be asked if they would like to complete the opportunity to register to vote may vary depending on each state's voter registration laws.