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The passage identifies two concerns—fish passage and flood risk—and describes design tweaks (release in high flow, bypass gaps, surge canals) that appear to address them without reducing trash capture. To justify scaling up, decision-makers need robust, generalizable evidence across time and contexts. Option B delivers exactly that: multi-season, multi-river performance showing (1) high trash capture (efficacy), (2) verified fish passage (ecological safety), and (3) no added flood risk (infrastructure safety). A single photo (A) is anecdotal and could be coincidental. An editorial (C) speaks to enthusiasm, not outcomes. A lab study on plastic density (D) informs mechanics but doesn’t test real-world system trade-offs. On Nelson–Denny strengthen questions, prefer evidence that addresses all key constraints with field data over extended periods. Such evidence reduces the chance that pilot success was due to unique local conditions, thereby making the argument for wider adoption more credible and policy-relevant.