Final answer:
Safety bars in the bathroom would increase the odds of survival for someone who had a serious heart attack and lives alone.
Step-by-step explanation:
After a serious heart attack, there are several acquisitions that can increase the odds of survival for someone living alone. Out of the options provided, acquiring safety bars in the bathroom would be the most relevant and beneficial in this situation. Safety bars in the bathroom can prevent falls and accidents, providing support and stability for someone with a heart condition. While having a more reliable automobile may be important for transportation, it is not directly related to improving survival odds after a heart attack. Similarly, a dog can provide companionship and emotional support, but it may not have a significant impact on survival chances.