Final answer:
Emma should decline the transaction if an age check fails after attempting to verify the customer's age with a proper ID, as per legal and company policy on age-restricted sales.
Step-by-step explanation:
If Emma is helping a customer verify age and the age check fails, she should b. Decline the transaction. This is the standard procedure when age verification is required for a transaction, typically related to the purchase of restricted goods or services. If alternate identification does not remedy the age verification issue, the transaction should not proceed.
In making this decision, Emma would be guided by legal requirements and company policy concerning age-restricted sales. Taking another form of ID could be an option, but if multiple attempts fail to verify the customer's age accurately, declining the transaction is the responsible action. It also helps prevent potential legal penalties for the business. Seeking manager assistance may be necessary if the situation escalates or if there's uncertainty about the policy.