The correct answer is Option 4: Russia. Russia was not one of the original members of the G-7, which eventually became the G-8.

The Group of Seven (G-7) was initially formed in 1975 as an informal gathering of major industrialized democracies. The original members of the G-7 were the United States, United Kingdom, France, Germany, Italy, Japan, and Canada. These countries came together to discuss economic and political issues of mutual interest.

In 1997, Russia was invited to join the group, and it became the G-8. The inclusion of Russia was based on several factors, including its transition towards a market economy and its growing global influence. However, Russia`s membership in the G-8 was suspended in 2014 following its annexation of Crimea from Ukraine. The other G-7 members decided to exclude Russia from the group due to its violation of international law.

Since then, the group has continued as the G-7, consisting of the United States, United Kingdom, France, Germany, Italy, Japan, and Canada. The G-7 nations continue to meet annually to discuss and coordinate policies on various global issues, such as economic growth, trade, climate change, and security.

It`s worth noting that the G-7 is an informal group, and its decisions are not legally binding. However, it serves as a platform for dialogue and cooperation among some of the world`s largest advanced economies.