Final answer:
The most accurate sentence is, 'Because aspirin has been found to lower the risk of heart disease and cancer, we should encourage older adults to take a low-dose aspirin pill daily,' since it reflects the benefits and recommended use of aspirin in preventive healthcare.
Step-by-step explanation:
The sentence that best expresses the central point of the selection is C: Because aspirin has been found to lower the risk of heart disease and cancer, we should encourage older adults to take a low-dose aspirin pill daily. This statement aligns with the provided information indicating that aspirin is recommended for adults at increased risk for coronary artery disease and has a role as an anticoagulant, reducing the adverse effects of a heart attack or stroke. However, it is also necessary to consult a physician before beginning an aspirin regimen due to the potential for serious side effects, such as gastrointestinal bleeding.