Which of the following programs is a graphical editor for vector graphics?

Python is a general-purpose programming language, not a graphical editor.

NGINX is a high-performance web server and reverse proxy, not a graphics application.

Samba is a software suite that implements the SMB/CIFS protocol for file and printer sharing between Linux and Windows systems.

Inkscape is a free and open-source vector graphics editor that uses the SVG (Scalable Vector Graphics) format as its native file type. It provides tools for drawing shapes, paths, text, and complex illustrations that scale without quality loss. It is widely used as the open-source alternative to Adobe Illustrator.

MySQL is a relational database management system and has no role in graphics editing.