Question

Last year the scientists solved two important problems. (Специальный вопрос к подлежащему) Выберите один ответ: a. When did the scientists solve two important problems? b. Who did solve two important problems last year? c. Who solved two important problems last year?

Answer 1

Ответ - с, скорее всего

Answer 2

Answer in detail. Last year the scientists solved two important problems. (Special question to the subject) Choose one answer: a. When did the scientists solve two important problems? b. Who did solve two important problems last year? c. Who solved two important problems last year?

This is a sentence in Russian that is asking you to answer a question about the subject of the sentence. The subject is "the scientists" and the question is asking who they are. The correct answer is c. Who solved two important problems last year? The other two options are incorrect because they are asking about the time or the action of the sentence, not the subject. You can use online translation tools to translate from Russian to English, such as [Google Translate](https://translate.google.ru/?hl=en&tab=wT&authuser=0), [Yandex Translate](https://translate.yandex.com/en/translator/Russian-English), or [Translate.com](https://www.translate.com/russian-english). These tools can help you understand the meaning of the sentence and the question, but they may not always be accurate or grammatically correct. Therefore, you should also check the translation with other sources or native speakers if possible.