Final answer:
Factors that might be included in a country's GPI but not in its GDP include volunteer work, environmental efforts, and transportation costs for essential services.
Step-by-step explanation:
The factors that might be included in a country's GPI but not in its GDP are:
- A volunteer collects donations for a food bank. This reflects the value of the volunteer's time and contribution to the community, which is not captured in GDP.
- A factory owner pays for the installation of equipment to reduce carbon dioxide emissions. This reflects the positive impact on the environment, which is not accounted for in GDP.
- A nurse pays to ride a bus to the hospital for her shift. This reflects the nurse's transportation cost, which is an expense incurred in order to provide healthcare services and is not considered in GDP.