I'm not guru but I'll just try
Stable interest rates on long-term bonds are the financial market’s vote of confidence in the Federal Reserve keeping in control of inflation.
(A) in the Federal Reserve keeping in control of inflation
(B) that the Federal Reserve will keep inflation under control
(C) for the Federal Reserve, that it would keep control of inflation
(D) that inflation will be kept control of by the Federal Reserve
(E) that inflation would be kept control of by the Federal Reserve
1. I'd like "vote of confidence that" (B,D,E remain)
2. "would" changes the meaning. (E out)
3. active voice vs. passive voice (D out)
B is a winner.
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