How should Oki first approach an older man with tattered clothing who enters the store?

Choosing to greet the customer and ask if he would like assistance reflects a welcoming and respectful approach to customer service. This behavior demonstrates good interpersonal skills and an understanding that every customer deserves attention and support, regardless of their appearance. By initiating a friendly conversation, Oki creates an opportunity to understand the customer's needs, which can lead to a positive shopping experience for him.

This approach also highlights the importance of making every individual feel valued and not making assumptions based on clothing or appearance. Engaging with customers directly can establish rapport and trust, which are essential in building lasting relationships in a retail environment.

The other options do not align with this principle of customer service. Informing the customer about layaway plans without first greeting or engaging him can feel impersonal. Asking the customer to adhere to a dress code would not only be inappropriate but could also come off as judgmental and exclusionary. Waiting for the customer to approach can miss the chance to provide immediate assistance and guidance, potentially leaving the customer feeling ignored or undervalued.