This is a complex sentence. It cannot be a compound sentence because it has no comma. It is to long(complex) to be a simple sentence.
The answer is <u>either</u> B or D... <em>I would</em> go with D! Hope this helps :)
An example of theory about the relationship between language and thought is Vygotsky's philosophy.
What is Vygotsky's philosophy?
Vygotsky's philosophy serves as theory of human cognitive development and explain that Language plays multiple roles in behavior and thinking.
It should be noted that Language of thought theories explain the relationship between mental representation and linguistic structure.
Learn more about theory at;
brainly.com/question/11555274
answer: i think it's a complex compound
explanation: i dont know i could be wrong