Final answer:
The use of French words in English, particularly in ballet terminology, demonstrates the borrowing of concepts along with the words from French.
Explanation:
The best explanation for these words being used in English is that they were borrowed into English along with the concepts they describe. The influence of French on the English language is significant, especially in the realm of ballet terminology, where terms like pas de deux and arabesque originate from French dance practices. French words often create 'foreign pockets' in texts, adding flavor and depth. This borrowing of words from other languages is a common phenomenon that enriches and expands languages over time.
Learn more about Influence of French on English vocabulary here:
https://brainly.com/question/3665643