Answer:
Its about a girl playing a fun city wide game of hide and seek
The answer is, or should be, B. An 'adjective phrase' (or adjectival phrase) is a phrasewhose head word is an adjective, e.g. fond of steak, very happy, quite upset about it, etc.
Yes, the word "easy" is a common noun
hope this helps
If you prepare today for what is to come then the future will be easy to you