Answer:
A.They form organ systems is the correct answer.
Explanation:
Dr. Martin Luther King, Jr. was an essential voice in the civil rights movement because he advocated for peaceful, yet powerful protests that would bring attention to the cause. He was also an incredibly powerful speaker who captivated his listeners.
north america
south america
central america
carribean
Hatch Hollow in Harbor creek, Pennsylvania. is the most haunted place
