I believe it might be personification
The adjective is 'difficult' since it is describing the maze.
Answer:
I would have to go with "water"
Explanation:
Rainforests also help to maintain the world's water cycle by adding water to the atmosphere through the process of transpiration which creates clouds.
A MOOC is a massive open online courses. Believing the hype is something I cannot answer for you. It is an opinion, and it is yours to answer.
