Octopus and squid have little suction cups on their tentacles. It helps with sticking onto food (so it doesn't get away) and also helps with sticking into things. If it wanted to camouflage into some rocks, it can use its tentacles to cling to to the rock.
Tentacles can also grab and carry things. Scientists have made tests where they would put a clam in a jar with the lid screwed on. The octopus would grab onto the jar and use its tentacles to twist the lid off.
Without tentacles, octopuses and squids would be pretty helpless and probably couldn't survive in the deep ocean.
A detritivore is a animal that feeds on dead organic matter. A good example for a detritivore will be option C "Earthworm." A Earthworm feeds on dead organic matter such as dead plants, animals, rotten fruit, etc...
Hope this helps.
She doesn't. Rosalind Franklin died shortly after, due to cancer from the radiation used in her x ray experiments with DNA.
