Question

Arrange the following by decreasing order of urban population living in informal settlements by region, 2018:

• A. A, B, C, D
• B. B, A, C, D
• C. C, A, D, B
• D. B, D, A, C

Hint:

For informal settlement questions, remember that Sub-Saharan Africa generally has the highest proportion among global regions, while North America is comparatively much lower.

Answer 1

The Correct Option is C

Concept: Informal settlements include slums and unplanned settlements where people often lack secure housing, proper sanitation, safe water, and basic services.

Step 1: Understand the meaning of decreasing order.
The question asks for decreasing order, so we arrange the regions from the highest share of urban population living in informal settlements to the lowest share. \[ \text{Decreasing order} = \text{Highest informal settlement share} \rightarrow \text{Lowest informal settlement share} \]

Step 2: Compare the regions.
Sub-Saharan Africa has a very high proportion of urban population living in informal settlements.
Southeast Asia also has a significant informal settlement population.
Europe and Central Asia have a lower proportion than these regions.
North America has the lowest among the given options.

Step 3: Write the sequence using letters.
Sub-Saharan Africa is C.
Southeast Asia is A.
Europe and Central Asia is D.
North America is B. Therefore, the correct order is: \[ C, A, D, B \]