Pls its not b so what is it i will give 10
the solution to the problem was considered ingenious. no one else had been clever enough to figure it out.
in the sentence above, which of the following strategies would be most effective to determine the meaning of "ingenious"?
reread the sentence.
use a dictionary or thesaurus.
look for a synonym in the sentence.
locate a signal word and antonym.

'Use a dictionary or thesaurus'

Explanation:

Because, I don't think there is any synonyms in that sentence for that word or anything that gives you a hint about the unknown word meaning, but, if I would make a guess I would say that the following sentence, "No one else had been clever enough to figure it out" would say something about the 'unknown meaning' word. However, usually if I see a word that I can't find its meaning in the following sentence, I would just look up its meaning or find synonyms of that word.

it should be repealed cuase its not fair