What characterizes NGC 7771?

NGC 7771 is characterized as the largest spiral galaxy in a particular group of three galaxies, often referred to as the NGC 7771 group or the Drunken Dragon group. This group also includes NGC 7770 and NGC 7772, with NGC 7771 standing out due to its size and prominence among them. Spiral galaxies are noted for their distinct arms that extend outward from the center, and NGC 7771 exhibits these features, making it a classic example of this galaxy type.

The other choices don't accurately depict NGC 7771. While some galaxies host supermassive black holes, the defining characteristic of NGC 7771 is its spiral structure and dominant size within its group rather than any association with a black hole or supernova events. Additionally, it is not classified as a distant galaxy cluster, nor is it a type-1 supernova, as those designations relate to different astronomical phenomena.