Which of the Following Findings, If True, Would Best Argue

Multiple Choice

Which of the following findings, if true, would best argue in favor of the parallel processing model of multi-tasking, as opposed to the task-switching model?

A) Participants' performance in the dual task condition improved dramatically over time with practice.
B) Brain activity increased throughout frontal cortex in the dual task condition with practice.
C) Frontal connectivity between brain areas involved in each task increased with time and practice.
D) Participants' improvements over time in the dual task condition were highly correlated with their improvements on each individual task.