Concept:Foreign investment depends on a safe and predictable business environment. Political instability creates high risk and discourages investors.
Explanation:In Tropical African countries, the most serious barrier to foreign investment is political instability.
Frequent changes in government, civil unrest, and policy uncertainty make it difficult for businesses to operate reliably.
Investors cannot predict the future of their projects when governments or laws may change suddenly.
This instability often leads to loss of assets, disruption of production, and reduced profit.
Low demand for manufactured goods and inadequate raw materials are not the greatest obstacles because many African markets offer natural resources and consumer needs.
Inadequate capital is also a challenge, but foreign investment is meant to supply capital, so lack of local capital is not the main hindrance.
Therefore, political instability is the key factor that makes foreign investors reluctant to enter Tropical African countries.
Answer:C. political instability in the countries