Answer:
A. The diary of Orville Wright
Step-by-step explanation:
A primary source provides direct or firsthand evidence about an event, object, person, or work of art. Primary sources include historical and legal documents, eyewitness accounts, results of experiments, statistical data, pieces of creative writing, audio and video recordings, speeches, and art objects. In this case, the diary of Orville Wright is a first hand evidence of his life. Hope this helps!