What was the time period of the Korean War?

1950-53

The correct answer is Option 2 - 1950-53

The Korean War during 1950-53 and the dynamics of the Cold War era further intensified the rivalries between the two Koreas.

The Korean peninsula was divided into South Korea (Republic of Korea) and North Korea (Democratic People’s Republic of Korea) at the end of the Second World War along the 38th Parallel. The Korean War during 1950-53 and dynamics of the Cold War era further intensified the rivalries between the two sides. Both the Koreas finally became Members of the UN on 17 September 1991.