she was not at all hesitant and indecisive.on the contrary she was determined.为啥determned用法错

Question

determined是选填词，备选的还有resolute、firm.答案说determined与resolute同义（因前边有and一词不符合句子结构）不懂，求解答！

Answer 1

这是考的词义辨析
考的是
hesitant和indecisive的反义词
hesitant和indecisive意思是近义词，意思是犹豫不决，反义词是resolute，行事果断

而be determinted 是下决心做某事
因此最佳答案是resolute