Life expectancy can be interpreted as the average number of years a person is expected to live, based on the current mortality rates in a specific country. Different countries have different life expectancies based on factors like healthcare system, lifestyle, diet, etc.

Option 1: Canada. While Canada does have a high life expectancy, it is not the highest in the world. The high standard of living and excellent healthcare system contribute to this.

Option 2: Germany. Germany also has a higher than average life expectancy, thanks to advanced healthcare and good living conditions. However, it still doesn`t top the list.

Option 3: Japan. Japan currently has the highest life expectancy in the world. This is largely due to a combination of factors including an advanced healthcare system, a diet high in vegetables and fish, and a society that values physical activity.

Option 4: Norway. Like the other countries listed, Norway also has a high life expectancy but it`s not the highest. Factors contributing to Norway`s high life expectancy are a strong healthcare system and a high standard of living.