SECTION 2 Vocabularly Replacement This section consists of 15 sentences; in each sentence one word or phrase is given in the brackets. Below each sentence, there are 4 choices respectively marked by letters A,B,C and D.Choose the word or phrase that can replace the part without causing any grammatical error or changing the basic meaning of the sentencE.There is only ONE right answer. Once a proposal goes into its place, it's not likely to reverse it. A.enhance B.implement C.overthrow D.provoke