答案：D

解析：

Getting the correct answer to this question depends almost entirely on your knowing the definitions of the five words you must choose from. Which of the choices describes a judgment made "before all the facts are known?" Such a judgment, by definition, is not deliberate, and the sentence doesn't tell us whether the judgment was "harsh" or lenient, "sensible" or dumb, "fair" or unfair. "Premature" means hasty or early. It fits the blank perfectly.