Question

which of these file formats would you choose if you had to create a vector graphic?
portable network graphic (png)
microsoft powerpoint (pptx)
graphic interchange format (gif)
adobe illustrator (ai)

Explanation:

PNG, PPTX, and GIF are not vector - graphic formats. PNG is a raster image format for storing digital images. PPTX is a presentation file format. GIF is mainly used for simple animations and raster graphics. Adobe Illustrator (AI) is a native vector - graphics format, designed for creating scalable vector art.

Answer:

Adobe Illustrator (ai)