Mixed module checkpoint

Check your understanding across the optional calculus-bridge module with a mixed assessment of limits, continuity, intermediate values, local rates and accumulation. Questions are deliberately interleaved without method labels and use new item families rather than copied practice exercises. Both single-select and multiselect items require attention to domains, theorem hypotheses, units and the limits of numerical evidence. Attempt independently before reading the detailed worked explanations. This compact checkpoint samples the module; it does not establish mastery of every objective or replace a Calculus I assessment.