Concept:Low capital formation means an economy is unable to build enough productive assets like machines, factories, and infrastructure.
Explanation:When capital formation is low, workers have fewer tools and equipment to produce goods.
As a result, productivity and output remain low.
Low output leads to low incomes for households and firms.
Therefore, low per capita income is a clear indicator of poor capital formation.
High rate of investment and high household savings are signs of healthy capital formation, not low capital formation.
Low importation of consumer goods does not directly indicate low capital formation either.
So the only correct option is A.
Answer:A: low per capita income.