The revival work of the Olympic Games was undertaken by Baron Pierre de Coubertin after a lapse of 15 centuries. The first modern Games were held in 1896 at

Athens
London
Paris
St. Louis

The correct answer is: A. Athens

The first modern Olympic Games were held in Athens, Greece, in 1896. The Games were revived by Baron Pierre de Coubertin, a French educator and historian, who believed that the Games would promote international peace and understanding. The Games were a huge success, with over 245 athletes from 14 countries competing in 43 events.

The Games were held every four years until 1916, when they were cancelled due to World War I. They resumed in 1920 and have been held every four years since then, except during World War II.

The Olympic Games have grown significantly since their inception in 1896. In 2016, over 11,000 athletes from 206 countries competed in 306 events. The Games have become one of the most watched sporting events in the world, with billions of people tuning in to watch the Games on television.

The Olympic Games have also been the subject of controversy. Some people have criticized the Games for their commercialization and for the large amounts of money that are spent on them. Others have criticized the Games for their political aspects, such as the boycott of the 1980 and 1984 Games by the United States and the Soviet Union, respectively.

Despite the controversies, the Olympic Games remain one of the most popular sporting events in the world. They are a symbol of international cooperation and competition, and they provide a platform for athletes from all over the world to compete against each other.

The other options are:

B. London: The first modern Olympic Games were not held in London. The first modern Olympic Games were held in Athens, Greece, in 1896.

C. Paris: The first modern Olympic Games were not held in Paris. The first modern Olympic Games were held in Athens, Greece, in 1896.

D. St. Louis: The first modern Olympic Games were not held in St. Louis. The first modern Olympic Games were held in Athens, Greece, in 1896.