Explanation:

- Preventive Medicine:

- Involves measures to prevent diseases, such as vaccinations and health education.

- Aims to reduce healthcare costs by avoiding illnesses.

- Curative Medicine:

- Focuses on treating diseases and conditions after they occur.

- Includes surgeries, medications, and therapies to cure or manage health issues.

- Social Medicine:

- Considers the impact of societal factors on health.

- Aims to address health disparities and promote equality through policies and public health initiatives.

- All of These:

- Health expenditures can indeed be directed towards preventive, curative, and social medicine.

- Balancing spending across all these areas can lead to a comprehensive healthcare system.

All of These is the right choice.