The answer you will be looking for is A. When rain mixes with soil, it creates mud which can then create a mud slide depending on the slant of the ground.
You might wanna ask the teacher dude. Sorry.
No. Since the longest length is 12, then the 4 and the 6 cannot possible reach both points. Put the 4 and the 6 in a straight line, and even then it only has a length of 10 units, not enough to reach 12
The Mosul Dam is located in Iraq- this is the correct answer.
It was built 30 years ago and currently it is causing fears of it breaking; it's located on gympsium, which is prone to erosion.
The Mosul Dam is currently in the hands of the Iraqi government but it was shortly occupied by ISIS to.