单选题 The young man asked his parents not to worry because he was full of optimism about his career.
A. confidence B. motivation C. imagination D. resolution

【正确答案】 A
【答案解析】[解析] 各项的意思是：confidence自信，信心；motivation动机，动力；imagination想象，想象力；resolution决心，坚定。划线单词optimism的意思是：乐观，乐观主义。句意是：那个年轻人告诉他的父母不要担心，因为他对事业充满希望。所以，答案是A。