Please read the following and answer accordingly$-$

As an administrative assistant, it is important to remain pleasant and accommodating when talking to potential clients and business contacts whether on the phone or in person. All administrative assistants should receive plenty of training using a multiple lined phone prior to taking actual calls. This should help to avoid hang$-$ups and misdirected transfers. When entering the building, potential clients and business contacts should be warmly greeted. After promptly notifying the inoffice personnel of the client's arrival, it is a good idea for the administrative assistant to offer the client a beverage $($e$.$g$.,$ coffee, tea, or water$)$ while he or she waits.

Which of the following sentences "best" summarizes this passage?