What does the Author of this Article mean when saying that Rome was “Hellenized”?

What types of visual art mediums are heavily based on observation?

The caves at lascaux were closed in 1963 because a. vandals were destroying the paintings b. the collective breath of the many visitors caused the paintings to corrode c. the weather was destroying the paintings d. the government of france wanted scholars to be able to study the work without distraction

What is the main element that sets western art criticism apart apart from that of the rest of the world