B. Contrast the changes in death rates due to cancer, heart disease, and cerebrovascular diseases. What additional information would be useful to specify better the changes in these conditions?

Heart disease, cancer, and cerebrovascular diseases are major leading causes of death but the graph has changed from the years. The death rate due to heart disease, cancer, and cerebrovascular diseases has been reduced if we compare it with the dat aof 90's.

The contrast can be present on the basis of mortality data, population estimates, and population projections to evaluate the changes in the death rates due to cancer, heart disease, and cerebrovascular diseases.

The surgeons in 90's found smoking as the major cause of heart diseases and then people started avoiding smoking and reduced the death rate. Like wise several risk factors were same for cancer, heart disease, and cerebrovascular diseases including smoking, tobacco use, obesity, and physical inactivity that spread awareness among people and reduced the death rate till 2019 in comparison to earlier 90'.

Whether the risks of heart diseases and cerebrovscular diseases increases with the age but it has also reduced from the years.

Additional information that will be useful to specify better changes in the health condition can include avoid related risk factors, early diagnosis, and access to health care.

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