Fill out the labels that is what It says in tha page
1st and 4th one. 3 could be possible not completely sure its been awhile since i took the class. but the other 2 are impossible.
Breaking down material such as rocks and wood
there are already many japanese plants, so not the iris. I don't see any water features here and I have no idea what a fence will do. Also I don't see a reason for a spirit gate, so the answer should be a water feature.
Out of the choices given, the water rises and falls with precipitation. The water table is the level below where the ground gets saturated with water. The correct answer is B.