The sentence "The sky is a beautiful turquoise blue with soft white clouds" uses sophisticated vocabulary.
Sophisticated vocabulary may be defined as a process of a progressive and complicated set of instructions that makes the sentence more complex to understand.
The complete question is, Which sentence uses sophisticated vocabulary?
Thus, the correct option for this question is A.
To learn more about Sophisticated vocabulary, refer to the link:
https://brainly.com/question/4836875
#SPJ1