Which holiday celebrates the achievements of African Americans and is observed on the third Monday of January?

Martin Luther King Jr. Day is a holiday dedicated to honoring the achievements and contributions of African Americans, especially recognizing the profound impact of Dr. Martin Luther King Jr. on the civil rights movement. Observed on the third Monday of January, it serves as a time to reflect on Dr. King's legacy of promoting equality and social justice through nonviolent activism.

This holiday not only celebrates King's accomplishments but also encourages community service and civic engagement, aligning with the ideals he championed throughout his life. The timing of this observance connects with Dr. King's birthday, which is January 15, making it a fitting tribute to his enduring influence on American society.

The other options, such as Columbus Day, Emancipation Day, and Juneteenth, address various important historical events and figures but do not specifically celebrate Dr. King's contributions or fall on the designated commemorative day in January.