1. More than half of these deaths attributed to stroke or heart disease occur: away from home , after the second such episode within one hour of the onset of symptoms, before the person reaches the hospital within one hour of the onset of symptoms, after the person reaches the hospital away from home within a few hours of the onset of symptoms

The correct answer is: within one hour of the onset of symptoms, before the person reaches the hospital.<br /><br />Explanation: Stroke and heart disease are medical emergencies that require immediate attention. The chances of survival and recovery are significantly higher if treatment is administered within the first hour of the onset of symptoms. This is because the longer the person waits to receive medical help, the more damage can occur to the brain or heart, making it harder to reverse the effects. Therefore, it is crucial for individuals experiencing symptoms of stroke or heart disease to seek immediate medical attention to increase their chances of survival and recovery.