I believe it is G. The team determined that fluid running along the brains blood vessels carries waste away from the brain
A because if you do not now what kinds of sharks are out there
If the options are metaphor, alliteration, allusion, and apostrophe, I believe the answer is metaphor, because the others don't fit.
Alliteration is the repetition of a consonant.
Allusion is reference to something or somebody outside of that literary work.
And apostrophe is the author speaking directly to somebody outside the poem, usually gods or a muse.
D. A place is concise red a desert if it gets less than 10 inches of rain per year