What is the best description of Cosmic Microwave Background Radiation?

Residual energy leftover form the origin of the universe.

Energy from the Sun measured in microwaves.

Evidence that galaxies are rapidly moving apart.

The chemical composition of Hydrogen and Helium.

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Toorale man murder mystery < - your lab link 1. how was the toorale man found? 2. what did archaeologists learn about the burial? why is the burial important? 3. what information were the scientists able to learn from the skeleton itself? 4. why is the question of whether the injuries came from a stone or steel weapon important? how could scientists distinguish between the different types of weapons? 5. what did the carbon dating and soil testing tell scientists about toorale man? why are the dates interesting for scientists?