Final answer:
Direct foreign investment is the primary income component in a country's current account.
Step-by-step explanation:
The primary income component in a country's current account may reflect income received due to direct foreign investment. Direct foreign investment refers to when a company or individual from one country makes a substantial investment (such as buying a controlling stake in a company) in another country. This can generate income for the country receiving the investment, resulting in a positive balance in the current account.