Fungi have an extremely high surface-area-to-volume ratio. what is the advantage of this to an organism that gets most of its nutrition through absorption?

The advantage is that the larger surface area allows for more material to be transported through the cell membrane. Hyphae, the body of fungi has a high surface area to volume ratio, which makes fungi extremely well adapted to absorbing nutrients from soil and other substrates through the membrane. The nutrients can also easily and rapidly reach any part of the cells interior. 

C) to ensure each new cell has an exact copy of the dna

Volcanoes make new rocks so not ahotspots are the the stuff that makes volcanoes mid atlantic ridge(mar cause i’m lazy) is a constructive plate boundary so it makes sense that new rocks would be found near it, also the mar is in the middle of the ocean so it fits the description deep ocean trench, umm, there’s no ocean trenches to where you’re goingso the mar is most likely the answeri wouldn’t trust me but hey why not