It’s based on the idea all people are treated equal, is accepted.
A. that ; that
B. which ; which
C. which ; when
D. that ; which
网友回答
A. that ; that
B. which ; which
C. which ; when
(答案→)D. that ; which
解析：考查强调句型和定语从句。第一空与it’s构成强调句型。关系代词Which指代前面一句话的内容在句中做主语。