How is Brazil different from all other South American countries?

A Most of its people live in cities.
B Its culture is a blend of several cultures.
C Its official language is Portuguese.
D Most of its people are Christian.

C Its official language is Portuguese.

The correct answer is C: Its official language is Portuguese. Unlike most other South American countries, Brazil's official language is Portuguese. The majority of South American countries have Spanish as their official language.

The correct answer is C: Its official language is Portuguese.

To determine how Brazil is different from all other South American countries, we can analyze each option:

A. Most of its people live in cities: While it is true that Brazil has a significant urban population, this is not a unique characteristic among South American countries. Other countries, such as Argentina and Colombia, also have a high percentage of their population living in urban areas.

B. Its culture is a blend of several cultures: While Brazil does indeed have a diverse and rich cultural heritage, this is also true for many other South American countries. Countries like Peru and Ecuador, for example, also have a blend of indigenous, European, and African influences in their culture.

C. Its official language is Portuguese: This is the correct answer and the key distinction between Brazil and all other South American countries. While Spanish is the dominant language in most South American countries, Brazil is the only country in the region where Portuguese is the official language. This linguistic difference sets Brazil apart from its neighboring countries.

D. Most of its people are Christian: While Brazil does have a predominantly Christian population, this is also true for many other South American countries. The majority of South American countries have a significant Christian population, including countries like Argentina, Colombia, and Peru.

To summarize, the correct answer is C: Brazil stands out from all other South American countries because its official language is Portuguese.