An utterance that demonstrates a specific function, such as making polite requests, is known as?

• A. Exponent
• B. Echo
• C. Extensive reading
• D. World Englishes

Answer: (A)

The main idea here is how language encodes function. An utterance that shows a particular function—like making a polite request—uses a specific linguistic form to realize that function. In language-teaching terminology, that form is called an exponent: the actual words and structure that realize the function of making a polite request. So the utterance serves as the exponent of that function, showing how the intended purpose is conveyed in speech. The other terms don’t fit: an echo is about repetition, extensive reading is a learning activity, and World Englishes refers to varieties of English—none of these describe a linguistic form that carries a function.