Key idea: This is an Economy + Culture synthesis summary question, recognisable because it analyzes an economic phenomenon (gentrification) through the lens of cultural semiotics and symbolic exclusion.
Step 1: Map the argument. Premise: Gentrification is usually analyzed macroeconomically, but this overlooks the semiotic dimension. Mechanism: Aesthetic markers function as symbolic boundary-making. Consequence: They actively signal cultural exclusion to long-term residents, accelerating psychological and physical displacement before formal economic eviction.
Step 2: Identify the core thesis. The author's main point is that gentrification has a "semiotic dimension" where aesthetic changes actively drive psychological displacement, not just reflect economic changes.
Step 3: Evaluate Option A. Commits the partial summary trap by focusing only on the macroeconomic view, which the passage explicitly says "overlooks the semiotic dimension."
Step 4: Evaluate Option B. Claims aesthetic markers are "direct economic tools for formal eviction." The passage states they accelerate displacement "before any formal economic eviction occurs," making them psychological/symbolic tools, not direct economic eviction tools.
Step 5: Evaluate Option C. Commits the moralizing distractor trap by framing psychological displacement as a "necessary and beneficial side effect." The passage presents it as a harmful mechanism of exclusion.
Step 6: Evaluate Option D. Captures the semiotic dimension, the active signaling of cultural exclusion, and the acceleration of psychological/physical displacement ahead of formal eviction. Matches the full argument.
Answer: Option D