Final answer:
The uncontractible copula BE is used in the sentence 'Is this OK?' and requires an obligatory context, which in this case is the adverbial 'OK'. The statement is A. True.
Step-by-step explanation:
In the sentence 'Is this OK?', the uncontractible copula BE is used. The uncontractible copula BE forms questions and obligatorily requires an obligatory context. In this case, the obligatory context is the adverbial 'OK', which answers the question 'Is this what?'.
For example, in the sentence 'I am happy', there is no obligatory context for the uncontractible copula BE, so it can be contracted to 'I'm happy'.
Therefore, the statement 'The following sentence contains an obligatory context for the uncontractible copula BE (am, are, is, was, were):'Is this OK?' is True.'
The statement "Is this OK?" contains the uncontractible copula BE (is), making it an example of an obligatory context for the copula. The sentence structure follows one of the basic patterns: (subject) + (be verb) + (adjective), where 'this' is the subject, 'is' is the be verb, and 'OK' acts as an adjective describing the subject.