Question

CIAM, founded in 1928, stands for

• A. Commission for International Aeromodelling
• B. Customer Identity Access Management
• C. Central Institution of Aviation Motors
• D. International Congresses of Modern Architecture

Hint:

CIAM was instrumental in promoting modernist architecture and bringing together architects from different countries to discuss design principles.

Answer 1

The Correct Option is D

CIAM's founding year, 1928, is the clue that narrows this down quickly.
Aeromodelling and Aviation Motors both belong to aviation-related fields, unrelated to a 1928 architecture congress.
Customer Identity Access Management is a present-day software term, which could not have existed in 1928, so it is out of place here.
The organisation founded that year by modernist architects such as Le Corbusier was the International Congresses of Modern Architecture, matching both the date and the field.
So the correct answer is International Congresses of Modern Architecture.

Answer 2

Instead of decoding the acronym letter by letter, this approach checks what each candidate organisation was actually set up to do, since only one purpose lines up with a landmark 1928 architecture body.

1. Commission for International Aeromodelling: A body with this purpose would concern itself with model-aircraft competitions and standards, nothing to do with architecture or urban design.
2. Customer Identity Access Management: This describes a function within modern digital systems for managing user logins and access, a purpose that did not exist as a discipline in 1928.
3. Central Institution of Aviation Motors: Such a body would be concerned with engine design and testing for aircraft, again a different professional domain entirely.
4. International Congresses of Modern Architecture: This purpose exactly matches CIAM's actual role, bringing together architects to define and spread the principles of modern architecture and urban planning starting in 1928.

Only one of the four purposes actually belongs to the world of architecture and urban planning in 1928, and that is the international congress of modern architects.

Therefore, the correct answer is International Congresses of Modern Architecture.