A 2kg ball is released from a height of 20m. what is its velocity when its height

The underlined group of words that is a participial phrase is:

O living in organized cities

Explanation:

One can recognize a participial phrase in a sentence because it looks like a verb, but it actually functions as an adjective.  Its purpose is to modify a noun in the same sentence. For example, "living in organized cities" is a participial phrase that spices up or further describes "the people of this area."  Phrases like this modify a noun and provide added description about the action of the noun or its description.