An example of courtesy is:

Helping others willingly when asked is an example of courtesy.

Courtesy involves showing kindness and consideration towards others, and helping others willingly when asked exemplifies this behavior. It reflects a willingness to assist and support others, fostering a positive and respectful environment.

While wearing a facility uniform demonstrates professionalism and adherence to workplace policies, it does not directly reflect courtesy. The act of wearing a uniform is primarily related to appearance and role compliance rather than an interpersonal consideration or kindness toward others.

Taking credit for another person's work is not an example of courtesy; rather, it is an act of dishonesty and disrespect. This behavior undermines teamwork and collaboration, which are essential components of a courteous workplace environment.

This choice is the embodiment of courtesy, as it involves voluntarily providing assistance to those in need. It shows respect for others and an understanding of their needs, promoting a culture of cooperation and support.

Completing another aide's documentation, while potentially helpful, may not represent courtesy unless it is done with their explicit request or consent. It can be perceived as overstepping boundaries or undermining another's responsibilities if not handled with care and communication.

Courtesy is characterized by actions that reflect kindness and consideration for others. Among the options provided, helping others willingly when asked stands out as the clearest example of courteous behavior, facilitating a supportive and respectful atmosphere. The other choices, while related to workplace conduct, do not embody the essence of courtesy in interpersonal interactions.