Which language of origin is represented by the words: sky, earth, moon, sun, water?

The correct answer is Anglo-Saxon (Old English). The words provided—sky, earth, moon, sun, and water—are all derived from Old English, a Germanic language that was spoken in England before the Norman Conquest.

These basic natural elements and celestial bodies are foundational vocabulary in English, and their roots remain strongly ingrained in the language today. For instance, 'sky' is from the Old Norse word "ský," but its usage in English continued through the Anglo-Saxon period; 'earth' comes from the Old English "eorþe"; 'moon' is derived from "mōna"; 'sun' is from "sunne"; and 'water' originates from "wæter."

This reflects the deep influence of Anglo-Saxon on modern English vocabulary, especially for basic, everyday words that describe the natural world. The other choices represent different linguistic influences on the English language, but they do not account for this particular set of words.