General Knowledge

Based on authoritative data, Iran's land area is approximately 1,628,786 square kilometers. Among the options, Mexico's land area is about 1,943,950 square kilometers, which is closest to Iran's size. Chile's land area is about 756,000 square kilometers, Congo's about 2,267,000 square kilometers, and Spain's about 506,000 square kilometers. Therefore, Mexico is the country closest in size to Iran.

Abraham Lincoln, John F. Kennedy, and William McKinley were all U.S. Presidents who were assassinated. Therefore, the correct answer is 'All of these'.

Bastille Day, celebrated on 14th July, is the French National Day commemorating the French Revolution and the storming of the Bastille prison in 1789. It is celebrated in France with various events and festivities.

The Suneung, officially known as the College Scholastic Ability Test (CSAT), is a standardized exam held annually in South Korea and is widely regarded as one of the toughest exams in the world.

According to Ethnologue, there are approximately 7,139 living languages in the world as of recent counts, making option A the most accurate. Other options are close estimates but less precise.

The Sun is composed primarily of hot plasma, which is a state of matter consisting of ionized gases at extremely high temperatures. It is not solid or cold plasma, and while it emits yellow light, it is not a yellow gas.

The Chauvet and Lascaux caves, famous for their well-preserved prehistoric figurative cave paintings, are located in France. These sites are renowned for their archaeological and artistic significance.

The Human Library concept originated in Denmark, where people can 'borrow' a person to have a conversation instead of borrowing a book. This initiative started in Copenhagen in 2000 to promote dialogue and reduce prejudices.

May is widely recognized as Mental Health Awareness Month, among many other health-related awareness months. While Cancer Awareness Month is generally observed in October (not May), and Nutrition Awareness Month is typically in March, Mental Health Awareness Month is specifically and officially observed in May. Therefore, option B is the correct answer.

South Africa has 11 official languages recognized at the national level, which is among the highest globally. However, Bolivia officially recognizes 37 languages, the highest number of official languages in the world. Zimbabwe has 16 official languages, but they are not all equally recognized or used nationally. Among the options given, South Africa has the highest number of official languages. Japan and Spain have far fewer official languages.