What is defined as a unified system of symbols that permits sharing of meaning?

The concept of a unified system of symbols that permits sharing of meaning is best encapsulated by language. Language serves as a structured means of communication that enables individuals to convey their thoughts, ideas, emotions, and information to one another. It consists of a set of symbols, which can include spoken words, written text, gestures, and even signs, all of which work together within a grammatical framework that facilitates understanding among speakers or users.

By defining itself through a standardized collection of words and rules, language allows people to express complex concepts and engage in meaningful exchanges. This capacity for shared understanding is essential for effective communication in any social context, including agricultural extension and communication, where clear interaction among various stakeholders is crucial for successful dissemination of information and practices.

Other options like dialect, alphabet, and codes, although related to communication, do not encompass the complete idea of a system designed specifically for meaning sharing on a broader scale. Dialect refers to variations in language specific to particular regions or groups, an alphabet is merely a set of letters used in writing, and codes are often specific to particular contexts or groups for encoding information but lack the universal nature of language. Thus, language stands out as the comprehensive system that embodies the essence of shared meaning.