Which organelle in the cell maintains dna?

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

Matthew decided he wanted to hike up mount everest. on his way to the top, it began to snow and the temperature dropped to -10°f. matthew forgot to wear a heavy jacket so his body began to shiver beyond control. in this case, matthew's body shivering is the to a drop in temperature. * 0 points reflex stimuli responce environmental facto

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks