Final answer:
The statement that all languages have a commonality due to the structure of the brain is true, as humans share similar anatomical and cognitive structures that facilitate language learning, like Broca's and Wernicke's areas.
Step-by-step explanation:
The question "All languages have a commonality because of the structure of the brain" addresses whether the fundamental characteristics of languages are shaped by the neurological features common to all humans. This is a true statement. All humans share the same basic anatomical and cognitive structures that enable language acquisition and processing, such as the presence of specialized regions like Broca's and Wernicke's areas typically located in the left hemisphere of the brain. These areas are associated with speech production and language comprehension, respectively. Because of our shared human anatomy and brain structure, our ability to learn and use language exhibits common traits across diverse cultures and languages.
It's this shared capability for language, rooted in brain structure, that allows even infants to effortlessly learn the linguistic rules and vocabulary of their native language. Our biological preparedness for language means that, given exposure, we can learn to communicate effectively in any of the world's languages from birth. Additionally, some linguistic anthropologists are dedicated to identifying these universal features across all languages, reinforced by the fact that our brain structure fosters them.