Morphosyntax deficits are most evident in sentences that require

• A. Semantic Knowledge
• B. Syntactic Complexity
• C. Phonological Processing
• D. Morphological Markers

Answer: (B)

Morphosyntactic abilities come under strongest pressure when the sentence requires coordinating multiple grammatical elements across a complex structure. As syntax becomes more intricate—with nested clauses, long-distance dependencies, and multiple agreement and tense markings—the system must accurately encode and align morphology to convey who did what to whom and when. That heightened demand makes morphosyntactic deficits most evident. Semantic knowledge affects meaning, not the form itself; phonological processing governs sound, not grammar; and although morphological markers are part of morphosyntax, the clearest reveal of the difficulty is the need to manage complex syntactic structure.