[[An alternative question construction is an interrogative sentence in which the speaker offers a closed list of alternatives to fill in the unknown piece of information in the propositional content.]]
alternative question (INF/CXN) = an interrogative in which the speaker offers a closed list of alternatives to fill in the unknown piece of information in the propositional content; and the construction expressing this function. Example: Do you prefer beer or wine? is an instance of an alternative question construction, where the alternatives offered are beer and wine. (Section 12.3.1)