The section of the "volcanoes" page of the Ready.gov website that cautions people to be aware of mudflows is During
.The correct answer is D.
On the third point of do's they say and I quote "Avoid areas downwind, and river valleys downstream, of the volcano. Rubble and ash will be carried by wind and gravity.", this can be represented by mudflows.
There are no other parts in the page that talk about that so the other options cannot be correct since they are talking about incorrect segments of information.
