Which sentence uses negative words correctly?

a.
no one signed up for any of those courses.

b.
there weren't no more books on lemurs left in the library.

c.
she's never eaten nothing that comes from the sea.

d.
his headache was not relieved none by the medicine.

The sentence that uses negative words correctly is option A. No one signed up for any of those courses. The rest of the sentence in the choices did not properly used the negative words such as option C. It should be "she's never eaten anything" because the word "never" which is negative is already present. A double negative does not make any sense in a sentence.

Yeah u can't write an essay in 15min sorry bud