What's the answer i really need on this one guys

The Alps are the youngest and highest mountain system in Europe. They stretch across the western and southern part of the continent in a broad. I would say A

Answerseafloor spreading;

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!