I believe it is informational listening because he is giving information on how to get there.
The 1st mosaics were made in Greece, in the 4 and 3 centuries BC. they were made of black and white pebbles, colored ones were rare.
The correct answer is
C. Artists competed for the opportunity to build The Gates of Paradise. The one who won and was chosen to do this was Lorenzo Ghiberti. The Gates of Paradise refers to the golden doors on the Baptistery of San Giovanni in Florence, where each panel on the door depicts a scene from the Old Testament.