Challenge 1: A Logo Needed at Three Wildly Different Sizes — Solution Walkthrough

The answer:

The logo should be created and stored as a vector image, not a raster
image.

Why, per this chapter's own material:

A vector image stores mathematical paths and shapes rather than a
fixed grid of pixels, so it scales to any size with no quality loss at
all — exactly what's needed for a logo appearing on a business card,
a billboard, and a tiny website favicon, three sizes spanning an
enormous range. A raster version of the same logo, created at one
fixed resolution, would look fine at that resolution but would
degrade noticeably if scaled up significantly (for the billboard) —
there's simply no additional pixel detail available to reveal at a
larger size.

Why this matches the chapter's own web-format example directly:

This is precisely the tip box's own example — a logo should almost
always be vector (SVG) specifically because it needs to scale cleanly
across very different sizes, unlike a photograph, which is
fundamentally raster data and doesn't face this same scaling problem
in typical use.

WHY THIS WORKS AS AN ANSWER
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This exercise is a direct, practical application of this chapter's own
raster-vs-vector distinction and its own logo example to a concrete,
realistic multi-size use case.