Step 1: Recall the series-to-region map.
For hydrogen: Lyman (to \(n=1\)) is ultraviolet, Balmer (to \(n=2\)) is visible, and Paschen, Brackett, Pfund (to \(n=3,4,5\)) are infrared. This memory rule alone settles the answer.
Step 2: Justify with energy.
Transitions ending on the ground state \(n=1\) release the most energy of any hydrogen series because the ground level is the deepest. Higher photon energy means shorter wavelength.
Step 3: Connect energy to region.
These high-energy photons (about 10 eV upward) have wavelengths shorter than violet visible light, placing them in the ultraviolet band.
Step 4: Final choice.
Therefore the Lyman series is found in the ultraviolet part of the electromagnetic spectrum.
\[\boxed{\text{Ultraviolet}}\]