What is Israel's greatest resource? i need help!!?

Question

is ti oil, water, natural fertile land, or a skilled work force?

Answer 1

With the world's highest percentage of engineers and scientists, Israel's greatest natural resource is its skilled workforce - highly motivated, resourceful and independent - that enables Israel to stay ahead of the competition.

Israel’s workforce is particularly competitive because of the informal but effective get-down-to-business culture, exceptional ingenuity and entrepreneurial spirit. The combination of culture, skill and initiative creates a flexible, working system that allows for great adaptability while producing breakthrough technologies and quick time-to-market solutions.  

Answer 2

Skilled work force

It has no oil, the land is not naturally fertile, and most of its potable water has to be desalinized.