Concept:
The Sun emits energy across a wide range of wavelengths, from gamma rays and X-rays through ultraviolet, visible light, infrared and radio waves. Together this whole spread of energy travelling as waves is called electromagnetic radiation.
Step 1:
Gamma rays, X-rays and ultraviolet are only individual narrow bands within the full spectrum. They are parts of the energy, not the complete description of what the Earth receives.
Step 2:
The total energy the Earth gets from the Sun spans many bands at once (mostly visible and infrared), so the correct general name is electromagnetic radiation, which covers the entire spectrum.
Answer: Option (1) — Electromagnetic radiation.