Which statement best describes the effect of heavy workload on cognitive performance as discussed in the material?

Which statement best describes the effect of heavy workload on cognitive performance as discussed in the material?

• A. It improves multitasking efficiency
• B. It reduces breakdowns in safety
• C. It depletes attentional resources and leaves insufficient time to perform tasks safely
• D. It eliminates errors entirely

Answer: (C)

Heavy workload taxes cognitive resources, especially attention, which are finite in capacity. When many tasks compete for attention, there’s less mental bandwidth available for each one, so processing becomes slower and more prone to lapses. This depletion of attention makes it hard to allocate enough time and cognitive effort to perform tasks safely, increasing the chance of errors or unsafe actions. That’s why the statement about attentional resources being depleted and not enough time to do tasks safely best captures the effect described. The other ideas don’t fit as well: heavy workload does not improve multitasking efficiency, safety risks tend to rise rather than fall under high load, and errors are not eliminated—they typically increase when attention and time are stretched thin.

Heavy workload taxes cognitive resources, especially attention, which are finite in capacity. When many tasks compete for attention, there’s less mental bandwidth available for each one, so processing becomes slower and more prone to lapses. This depletion of attention makes it hard to allocate enough time and cognitive effort to perform tasks safely, increasing the chance of errors or unsafe actions. That’s why the statement about attentional resources being depleted and not enough time to do tasks safely best captures the effect described.

The other ideas don’t fit as well: heavy workload does not improve multitasking efficiency, safety risks tend to rise rather than fall under high load, and errors are not eliminated—they typically increase when attention and time are stretched thin.