Final answer:
The reference material does not specify the exact percentage of adults in the United States and England who get at least 30 minutes per day of exercise, and without more specific data, an accurate answer cannot be given for the multiple-choice options provided.
Step-by-step explanation:
The question asks what percentage of adults in the United States and England get at least 30 minutes per day of exercise. This information is not directly provided in the reference material given. However, it is mentioned that an estimated 30 percent of the world's population gets insufficient exercise, suggesting that the percentage of adults meeting exercise recommendations might be higher, but not specified for the US and England separately.
Furthermore, the U.S. Department of Health and Human Services (HHS) recommends that adults aged 18 to 64 engage in at least 150 minutes (2 hours and 30 minutes) to 300 minutes (5 hours) per week of moderate-intensity aerobic activity, which can be interpreted as at least 30 minutes per day. As the question lacks specific data for adults in the United States and England, we cannot confidently provide an answer among the multiple-choice options given without more localized and updated data.