A recent meta-analytic study found that ____ exercise was associated with improvements in cognitive processing speed, attention, executive control, and memory. Such findings are supported by brain studies that demonstrate less cortical brain tissue loss and greater hippocampus volume in aerobically fit older adults.

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The study found that aerobic exercise was associated with improvements in cognitive processing speed, attention, executive control, and memory. Brain studies also show benefits of aerobically fit older adults, further supporting this choice. Vigorous and regular exercise (A) may also have benefits, but it is not specified in the study. Anaerobic exercise (B) and high-intensity but occasional exercise (D) were not mentioned as having these particular benefits.

A Recent Meta-Analytic Study Found That ____ Exercise Was Associated