The author's latest memoir, while ostensibly a personal narrative, often veers into broader societal critiques, making its classification as purely autobiographical somewhat _____ and its true literary ambition rather _____.
✓ Correct Answer: Option B
If the memoir 'veers into broader societal critiques,' then classifying it as 'purely autobiographical' is 'dubious' (questionable), and its ambition is 'expansive' (broad in scope).