Doctors are often caught in a ________ because they have to decide whether they should tell their patients the truth or not.
句意：医生们经常陷入进退两难的境地，因为他们必须决定是否应该告诉病人真相。in a dilemma处于（进退两难的）困境。in a puzzle困惑，迷惑。perplexity困惑，茫然。bewilderment迷惑，昏 乱。故选C。