The oldest form of that would be B. wood! hope that I helped!
Long before concrete made its appearance on the building scene in Rome, the Romans utilized a volcanic stone native to Italy called tufa to construct their buildings. Although tufa never went out of use, travertine began to be utilized in the late 2nd century B.C.E. because it was more durable.
The answer is b) musicians because they are the one that preform in public!
The exposure time was about 8 hours.
