In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number.
Can you ____(1)____ a world without human beings? Who but humans ___(2)____ have utilized the resources and created a ____(3)____ and cultural environment? The people living in a country are important to ____(4)____ the economy and the society. They ____(5)___are the greatest resource.

Q:

Select the most appropriate option that will fill in the blank number 4.

• 1
  evolve
• 2
  develop
• 3
  mature
• 4
  establish