Which of the Following Findings Supports the Technical Hypothesis for the Evolution

Which of the following findings supports the technical hypothesis for the evolution of language?

A) The FOXP2 gene occurs in closely related species like chimpanzees and gorillas, as well as in diverse taxa including frogs, fish, and rodents.
B) A British family with a mutant allele of the gene FOXP2 had severe speech deficits.
C) Stone tool making and cued word generation cause common cerebral blood flow signatures in the brain.
D) Chimpanzees have a longer tongue and differently shaped vocal tract than humans, making them physically incapable of producing particular sounds.