Which of the following is true about the SpeechTranslationConfig object?

The SpeechTranslationConfig object is specifically designed to configure parameters related to speech translation in Azure. One of its primary functions is to specify target languages for translation. When working with this object, users can define which languages they want the speech input to be translated into, allowing for dynamic and versatile handling of multilingual scenarios. This is particularly crucial in applications for real-time translations during conversations or in educational environments where users may speak different languages.

The other options do not align with the core functionality of the SpeechTranslationConfig object. While audio formats and user audio settings are relevant to speech services, the configuration of these aspects falls under different configurations or settings. User session authentication involves other classes and methods in Azure, which are not the focus of the SpeechTranslationConfig. Thus, the correct answer emphasizes the object's role in facilitating multilingual communication by identifying the desired output languages in the translation process.