The correct answer is: One feels that there won’t be any noticeable improvement in the human rights problem in Africa until all the African countries overcome their economic difficulties.
The other options are incorrect because they do not make sense in the context of the sentence.
- Option A: cannot be/will overcome is incorrect because it uses the past participle “been” with the modal verb “can”. This is not a correct grammatical construction.
- Option B: hasn’t been/had overcome is incorrect because it uses the present perfect participle “hasn’t been” with the past perfect verb “had overcome”. This is not a correct grammatical construction.
- Option C: wouldn’t be/would be overcome is incorrect because it uses the modal verb “would” with the past participle “be overcome”. This is not a correct grammatical construction.
- Option E: wasn’t/have overcome is incorrect because it uses the past tense verb “wasn’t” with the perfect infinitive “have overcome”. This is not a correct grammatical construction.
The correct answer, “won’t be/overcome”, uses the modal verb “will” with the infinitive “overcome”. This is a correct grammatical construction. The modal verb “will” indicates that the action of overcoming the economic difficulties is likely to happen in the future. The infinitive “overcome” indicates that the action is something that needs to be done.
The sentence is about the human rights problem in Africa. The speaker believes that there will be no noticeable improvement in the human rights problem until all the African countries overcome their economic difficulties. This is because economic difficulties can lead to poverty, which can in turn lead to human rights abuses.