A policy brief claims that nobody is impaired below 0.08% BAC and that emergency services are unnecessary until BAC exceeds 0.30%. Which critique best evaluates this claim using the continuum principle?

The brief is valid since alcohol has no acute physiologic effect until metabolic saturation occurs at 0.30%, which aligns with standard toxicology findings about immediate risk.

The claim is flawed: impairment increases along a continuous scale, so some individuals show meaningful impairment below 0.08% and clinical risks emerge long before 0.30% in certain contexts; binary cutoffs oversimplify risk.

It is correct to ignore values under 0.08% for all public-safety decisions because low BACs provide objective evidence of safe performance across populations in every task, including driving and operating machinery.

The policy is accurate because physiological responses to alcohol are identical in all individuals and only a single, high universal BAC threshold like 0.30% can be used to justify emergency treatment.