Choose the correct sentence?

This question is asking which sentence is grammatically correct. The sentence that is correct is "He refrained from taking any drastic action." The word "refrained" means that he did not do something, and "from taking" tells us what he did not do. In the other options, the words that come after "refrained" are not grammatically correct. "Refrained to take" and "refrained to taking" should use "from taking" instead. The option "He refrained i taking any drastic actions" has an extra "i" that should not be there. So, the correct sentence is "He refrained from taking any drastic action."