For the first question regarding which South Asian nation has the highest literacy rate among its citizens, based on the given options, neither China nor Japan are South Asian nations. Among the South Asian nations listed (Afghanistan and India), India generally has a higher literacy rate.
For the second question about India's GDP, the correct response is "Increased." Investment in productive capital tends to lead to economic growth and an increase in GDP.
So, the answers are:
- India (for the highest literacy rate).
- Increased (for India's GDP due to investments).