Final answer:
The correct statement is C) The ability to talk about things that are not present is a key feature of human language, known as displacement. This feature differentiates human language from animal communication systems and provides flexibility in expressing abstract concepts.
Step-by-step explanation:
The statement that best describes the concept related to human language that allows people to talk about things that are not present, and it is a key feature distinguishing language from call systems is C) The ability to talk about things that are not present is a key feature of human language. This aspect is called displacement, and it enables humans to discuss past and future events, hypothetical concepts, and abstract ideas. Unlike animal communication systems, which are more immediate and context-bound, human language allows for an infinite flexibility to convey a wide range of thoughts and ideas, including those not tied to the immediate environment.
Human language is open-ended and can produce new meanings, thanks in part to syntactic rules that govern how words and phrases are combined. Language plays a crucial role in social interactions, cultural development, and allows for discussing not just concrete objects but also abstract concepts. As human beings, we have evolved unique biological and cognitive abilities that have facilitated the development of complex language systems which are interwoven with cultural practices. This makes language a fundamental element in the creation and diversity of human cultures.