A) Grammatical phrase structures
B) Meaningful statements that refer to the world
C) Statements of pragmatic intent
D) Deep structures that unify at least two surface phrase structures

A) Were based on brain injury cases that do not apply to normal individuals
B) Were found to be broadly accurate, though recent models have refined the regions believed to be involved
C) Were inaccurate and need to be revised
D) Continue to be best for current studies of language.