I. Regular exercise helps reduce the risk of heart disease significantly. II. Physical activity also improves mood by releasing natural endorphins. III. The stock market experienced considerable volatility throughout the past year. IV. Doctors recommend at least thirty minutes of moderate exercise most days. V. Even brisk walking can provide substantial long-term health benefits. (I-V) numaralı cümlelerden hangisi parçanın bütünlüğünü bozmaktadır?
