In its earlier decades, the International Criminal Police Organization (INTERPOL) had its headquarters in which of the following cities?

Introduction / Context:
The International Criminal Police Organization, commonly known as INTERPOL, coordinates cross border police cooperation and helps member countries fight international crime. Over its long history, INTERPOL has had different headquarters locations. Many older general knowledge questions focus on the city where its offices were historically based before later moves.

Given Data / Assumptions:

• The question asks for the city where INTERPOL had its headquarters in earlier decades.
• Options: Paris, Rio de Janeiro, Dar es Salaam and None of these.
• The focus is on the historically well known location used in many traditional GK questions.

Concept / Approach:
Historically, INTERPOL's headquarters were located in Paris, France for many years. Modern references emphasise its headquarters in Lyon, but older exam questions still often expect Paris as the answer because of that long association. Rio de Janeiro in Brazil and Dar es Salaam in Tanzania have no such link with INTERPOL headquarters; they are included as distractors. Therefore, the correct choice in this standard GK pattern is Paris.

Step-by-Step Solution:
Step 1: Recall that INTERPOL is a global police cooperation body originally formed in Europe. Step 2: Remember that for a long period, its headquarters were in Paris, the capital of France. Step 3: Note that in more recent decades, the headquarters moved to Lyon, but many traditional questions still refer to the earlier Paris location. Step 4: Compare the options and identify Paris as the only city with a strong historical connection to INTERPOL headquarters. Step 5: Select Paris as the correct answer.

Verification / Alternative check:
Historical information about INTERPOL shows that it was closely associated with French authorities and that Paris housed the organisation for a long time. Later, the headquarters was relocated to Lyon, but exam literature that uses older patterns continues to reference Paris. This explains why Paris appears as the expected correct answer in objective questions like this one, even though modern data points to Lyon.

Why Other Options Are Wrong:
Rio de Janeiro: This major Brazilian city has no historic role as INTERPOL's headquarters.
Dar es Salaam: Although it is a large city in East Africa, it is not associated with INTERPOL's central office.
None of these: This option would be correct only if none of the listed cities had ever hosted INTERPOL's headquarters, but Paris historically did, so this option is incorrect.

Common Pitfalls:
A potential source of confusion is the difference between historically correct exam answers and the present-day location in Lyon. Some students who are aware of the move to Lyon may be tempted to choose None of these. For traditional GK questions, however, you should remember Paris as the historical headquarters and recognise that the question is based on that older fact set.

Final Answer:
In earlier decades, the headquarters of the International Criminal Police Organization (INTERPOL) were located in Paris.