A recent study found that cities with more public parks have lower rates of obesity among their populations. A city council member noted that cities with a higher number of public parks tend to invest more in overall community health initiatives, suggesting that the presence of parks helps create a healthier lifestyle.
However, a local business owner argued that the presence of parks might not directly influence obesity rates. Instead, he claims, it could be that other factors, such as availability of healthy food options and public transportation, are more significant in addressing obesity challenges.
Which of the following, if true, would most seriously weaken the local business owner’s argument?