What is the largest purely grammatical unit in a language?

• A. sentence
• B. clause
• C. phrase
• D. utterance

Answer: (A)

A sentence is the largest unit that remains a single grammatical structure. It centers on a subject and a predicate and can express a complete thought. Inside a sentence you can have multiple clauses, but they are all tied together to form one sentence, which is why it’s considered the maximal grammatical unit. A clause is smaller because it may not express a complete thought on its own and may rely on other parts to complete the idea. A phrase lacks a finite verb and cannot stand as a full proposition by itself. An utterance, while it can be long, is about actual spoken or written output and may include nongrammatical features or multiple sentences; it’s not defined purely by grammar. So the largest purely grammatical unit is the sentence.