What kinds of fish in one's diet can help to protect against cardiovascular disease?

A) Fish that have high omega-3 fatty acids
B) Fish that have high omega-6 fatty acids
C) Fish that have high amounts of mercury
D) Fish that have been fried in preparation

Fish that have high omega-3 fatty acids, such as salmon, tuna, mackerel, and sardines, are known to help protect against cardiovascular disease. These fatty acids help to reduce inflammation and improve overall heart health. Fish that have high levels of mercury or have been fried in preparation are not recommended for regular consumption.