Final answer:
a) Decline the showing and reschedule for the next day
Erica should attend the showing as requested by the seller to uphold her professional and ethical obligations, but she could consider rescheduling or finding a replacement if absolutely necessary.
Step-by-step explanation:
If Erica had an exhausting day and received a call from a buyer's agent wanting to show her listing that evening, she should consider several professional and ethical factors. Since the seller has specifically asked Erica to be present for all showings, Erica's professional obligation would be to attend the showing as the seller requested, unless there are extenuating circumstances that prevent her from fulfilling this obligation. If Erica truly cannot make it, it would be considerate to discuss the situation with the seller to find an acceptable solution, such as rescheduling the showing or asking if another trusted agent could attend in her place to not miss the potential opportunity for the seller. However, the best course of action, to maintain trust and professionalism, would likely be to attend the showing despite having had an exhausting day. It is essential for real estate agents to be accommodating to the needs of both buyers and sellers while also managing personal well-being.