You are developing a Web application that enables the administration and management of the existing Domain.com Web site. The Web application has a page named subcategories.aspx that contains a WebPart control named _productsWebPart. The _productsWebPart WebPart control has a property named _category of type String. You apply the WebBrowsable attribute to the _category property. You also add an EditorZone control to the subcategories.aspx page. The code for the EditorZone control is shown in the following exhibit.

<asp:EditorZone ID="_editorZone" Runat="Server">
<ZoneTemplate>
</ZoneTemplate>
</asp:EditorZone>

You must add a control to the ZoneTemplate element of the EditorZone control to allow users to edit the _category property.
What control should you add?