Which description corresponds to the structural description of language?

• A. A set of symbols that can be arranged in certain ways
• B. A complex code by which agents communicate information
• C. A cognitive model
• D. A social interaction

Answer: (A)

The main idea tested is how language is described in terms of its structure. Language as a system of symbols arranged according to rules captures the formal, rule-governed nature of how elements like sounds, letters, morphemes, and words are combined to form meaningful units. This structural view focuses on the possible configurations and the syntax that governs how those symbols can be put together, independent of meaning or use.

So, describing language as a set of symbols that can be arranged in certain ways aligns with the structural description. The other options describe different aspects: a complex code emphasizes the function of conveying information, a cognitive model concerns mental representations, and a social interaction highlights usage in social contexts.