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The passage frames a tension: open-source is ubiquitous (“powers much of the internet”) but maintenance is “underfunded,” creating security exposure that has produced “high-profile breaches.” The concluding sentence lists proposed remedies (grants, audits, liability), signaling a policy-oriented takeaway: because the ecosystem relies on thinly resourced stewards, institutional support is necessary. Option B synthesizes that logic. Option A is extreme and unsupported; the text critiques resourcing, not the model per se. Option C contradicts the evidence of breaches tied to neglect. Option D invents success not stated; proposals “range from…to…” implies ongoing debate, not resolution. On Nelson–Denny main-idea items, favor choices that integrate setup (ubiquity), problem (under-resourcing → breaches), and response (proposals). Check tone: the passage is analytical, not alarmist or triumphal, so avoid answers with “always,” “already,” or prohibition. Identifying that structure reliably leads to the synthesized claim about systemic support to mitigate risk.