Word Swap / Word Usage — quick quiz

In the following sentence, four words are given in bold. These words may or may not be in their correct positions. Choose the option with the correct arrangement of words to make the sentence grammatically and contextually correct. If no rearrangement is required, select option (D). The central bank's intervention (A) to stabilize the currency was timely (B), though critics argued it could have been more aggressive (C) to prevent (D) further depreciation.