The truce agreement that stopped the fighting in the Korean War in 1953

Amade North Korea and South Korea a united country.
Bleft North Korea and South Korea divided at the 38th parallel.
Cplaced North Korea and South Korea under United Nations control.
Drequired North Korea and South Korea to form democratic governments.

Verified Answer :

B) left North Korea and South Korea divided at the 38th parallel. 

The correct answer is B.

At the end of the Korean war in 1953, an armistice agreeement (and not a peace agreeement!) was signed. It approved the end of hostilities until a peace treaty could be actually enacted.

The division was maintained after the war and the armistice and continues nowadays, with the existence of two separate countries: North Korea and South Korea. The border that separates them is located along the 38th paralell. Hence, the peace treaty has not been signed yet.