Answer:
6) National Income Abroad
9) Exchange Rates
Explanation:
If a country becomes wealthier and its citizens gain access to more income, they will begin to import more goods and services from other countries which would mean they are spending more in relation to net exports.
If a country's exchange rate is such that its currency is strong, it would mean that imports from other countries would be cheaper when bought with the domestic currency so citizens would spend more importing which would impart next exports which is calculated as exports less imports.