This seems more like an opinionated question, and less of one that has a real answer. However, I would choose B because it would make a follow up question easier, and it seems like it’s more of what the teacher would be looking for.
I'd have to go with<span> D. less sophisticated than the shop girls.</span>
For a more intruiging writing, more interesting for the reader. it creates a better more imaginitive picture for the reader
Two main factors: The Norman invasion and political unification. The Norman invasion introduced a great many French loanwords, some 40% of English vocabulary by Chaucer's time.