Final answer:
Jacklyn "Jack" Lucas was indeed the youngest Marine to receive the Medal of Honor at the age of 17 for his actions during the Battle of Iwo Jima, making the statement true.
Step-by-step explanation:
Jacklyn "Jack" Lucas was indeed the youngest Marine and one of the youngest servicemen to receive the Medal of Honor during World War II. At the age of 17, Lucas earned this prestigious award for his heroic actions during the Battle of Iwo Jima, where he saved the lives of three fellow Marines by throwing himself on two grenades to absorb the blasts with his body. Miraculously, he survived and was later awarded the Medal of Honor by President Harry S. Truman. Therefore, the statement that Jacklyn "Jack" Lucas was the youngest Marine to earn the Medal of Honor is A) True. His bravery exemplifies the extraordinary courage and self-sacrifice that characterizes the recipients of this highest military decoration.