Concept:
The Convention on the Rights of the Child (CRC) is an international human rights treaty adopted by the United Nations to protect the rights of children worldwide.
• Recognizes civil, political, social, economic, and cultural rights of children.
• It is one of the most widely ratified human rights treaties.
• Defines a child as every human being below 18 years.
Step 1: Understand what CRC is.
The CRC was created to ensure:
Protection, survival, development and participation rights of children
across all nations.
Step 2: Recall the adoption date.
The UN General Assembly adopted the Convention on:
\[
20^{th}\text{ November 1989}
\]
This date is globally recognized as an important milestone in child rights.
Step 3: Check the options.
Among the given dates:
\[
20^{th}\text{ November 1989}
\]
matches the correct historical record.
Step 4: Final conclusion.
Hence, the correct answer is:
\[
\boxed{20^{th}\text{ November 1989}}
\]