Tom’s hesitation led to his colleagues’（ ）about his ability to handle the problem.
A、skepticism
B、speculation
C、confusion
D、ignorance
【正确答案】：A
【题目解析】：本题考查名词辨析。skepticism：怀疑态度，怀疑主义；speculation：推测，猜测；confusion：困惑，混乱；ignorance：无知。句意：汤姆的犹豫不决使他的同事对他处理这个问题的能力产生怀疑。故A选项符合题意。
