In the given passage few words are missing, which are followed by serial numbers. Choose the appropriate word from the given options that can fit into the given blank without altering the intended meaning.

Economic development and growth are supposed to ______________ (16) the employment situation in a country. Much of development literature _______________(17) this idea as a major expectation at least from the long-run perspective. It is also the case that the greater the amount of ________________ (18) labour in an economy and the greater the ________________(19) of underemployment, the slower will be the pace of change in the employment structure towards more regular and protected waged forms of employment. In fact, one can only give a proper perspective to the misunderstood policy challenges of __________________ (20) in a developing economy by first examining these matters at the broadest level with existing data.

The correct option is formalization.

Step-by-step Explanation:

1. Analyze the passage and sentence structure:

The sentence associated with blank (20) states: "In fact, one can only give a proper perspective to the misunderstood policy challenges of __________________ (20) in a developing economy by first examining these matters at the broadest level with existing data."

2. Understand the context:

The passage discusses economic development, employment structure, moving towards regular and protected waged forms of employment, and underemployment in developing economies. Moving informal or unregulated labor into regular, protected, and official employment structures is termed formalization.

3. Evaluate the options:

• formalization: Refers to the process of bringing informal jobs/enterprises into the formal economy with social protection and standard regulations. This fits the context of policy challenges in developing economies regarding labor and employment structures perfectly.
• realization: Means becoming aware of something or achieving a goal, which does not fit as a specific policy challenge for labor structure.
• hallucinating: Means experiencing illusions/perceptions not grounded in reality, which is completely irrelevant here.
• attaining: Means achieving or reaching something, requiring an object after it; it doesn't function as a standalone noun concept like formalization in this context.
• redirecting: Means changing the direction or focus of something, which does not convey the shift toward structured/protected employment.

4. Conclusion:

Therefore, formalization is the most suitable word for blank (20).