The Theory of Natural Pedagogy (2009) focuses on which aspect of language and its development?..: Word learning. Ostensive communication. Referential communication. Semantic communication.

The Theory of Natural Pedagogy (2009) focuses on the aspect of ostensive communication in language and its development.129 This theory suggests that humans have evolved a specialized communicative learning system that allows for the efficient transmission of cultural knowledge and generic information.3678 While it does involve aspects of word learning and referential communication, the core of the theory is centered around the concept of ostensive communication, which incorporates evolved interpretive biases that facilitate teaching and learning.510 Therefore, the most accurate answer from the given options is "Ostensive communication."