What is the first step in the process for overlaying translated text via RDC?

The correct choice highlights that creating a long text field available in the viewer is essential for overlaying translated text via RDC (Relativity Data Client). This step is important because a long text field can accommodate larger blocks of text, which is often necessary for translated documents.

When working with translated materials, it's crucial to have a field that can display sufficient content for viewers to understand the translation in its entirety. This ensures that all contextual information is preserved and easily accessible when users are reviewing the translated text.

Additionally, while creating a short text field could be a viable option for smaller snippets of text, it is typically limited in capacity, which may lead to incomplete information being presented. Options related to adding a translated file or configuring an existing dtSearch index are subsequent steps that would follow the establishment of a suitable text field. Thus, initiating the process with the correct type of field creates a solid foundation for further actions involving the translated text.