Which of the following correctly describes a capability of the Face service?

The Face service within Microsoft Azure is primarily designed to recognize and verify faces in images. This capability allows applications to identify individuals based on facial features, as well as to ensure that images belong to the same person through verification processes. It involves facial recognition technology to compare a single face against a database of known faces or to recognize multiple faces in an image, which is crucial for applications like security, user authentication, and personalized user experiences.

In contrast, other options address different functionalities. For instance, detecting objects in an image pertains to a different service focused on object detection rather than facial recognition. Creating thumbnails for images relates to image processing tasks but does not involve face recognition. Generating tags based on image content is another aspect of image analysis, which is typically handled by a different service aimed at interpreting the contents of images rather than specifically focusing on facial features. Thus, recognizing and verifying faces accurately denotes the unique capability of the Face service.