Describe acropolis and the public place

Acropolis means 'high city' in Greek. Most city-states in ancient Greece had at their centre a rocky mound or hill where they built their important temples and where the people could retreat to if under attack. The most famous acropolis is the one in Athens.

Explanation:

giant bugs

explanation:

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering