5) One of the important and common feature to every colosseum was the Awning also known as the Velarium whose purpose was to provide shade to the spectators . Thus the correct answer would be a shade awning on the top.
6) The arch of constantine was a huge arch which was constructed to celebrate Constantine's win over Maxentius at the battle of Milvian Bridge. Thus the answer would be False.
8) In the Post and Lintel system of Architecture before that of Romans had one flaw. Since the lintels were too heavy, most of the interior space were devoted in supporting the lintel and thus there was lesser space inside the building. During the roman period, concrete, arches and vaulting were discovered and experimented. And due to these innovations , Romans were capable of creating more interior spaces . As per the above discussion, it can be said that Romans were able to exploit (utilize or use) the post and lintel system of architecture.
7th question could not be answered as the details of that image is not provided !!!
QUESTION5 What is an important part of the Colosseum? The Forum of Hadrian heavy lintels a...