Final answer:
Dr. Saku's research focuses on cognitive intelligence within the field of health and cognitive psychology, exploring how aerobic exercise can lead to lasting cognitive improvements and a reduction in cognitive decline and neurodegenerative disorders.The correct option is C.
Step-by-step explanation:
Dr. Saku is investigating the effects of cardiovascular exercise on cognitive intelligence by comparing IQ scores in participants before and after a year of completing daily cardiovascular exercise. This falls under the domain of health and cognitive psychology, as it examines the impact of physical exercise on brain function and cognitive abilities. Aerobic exercise, like running and swimming, has been linked to improvements in cognitive functions such as attention, working memory, and problem-solving, which are aspects of cognitive intelligence.
Consistent aerobic exercise can induce persistent improvements in cognitive functions and is associated with healthy alterations in gene expression in the brain. Furthermore, performing mentally and physically stimulating activities can lead to a reduced incidence of cognitive decline and neurodegenerative disorders in older adults.