题目内容：

一道英语选择题,麻烦大家帮我解析一下,谢谢了
On October 6,1997,I called and spoke with his (devoted) caretaker,Amelia,who said the end was near.
A、dedicated
B、responsible
C、serious
D、fortunate
选择适当的选项代替括号内的单词,使得意思不变