There is no agreement whether methodology refers to the concepts peculiar to historical work in general or to the research techniques appropriate to the various branches of historical inquiry.
【答案解析】解析：本题属于复合结构。句子框架是There is no agreement。whether…or…引导的名词从句是agreement的同位语。在这个同位语从句中，methodology后面跟着两个并列谓语，即refers to…or(refers)to。peculiar to historical work和appropriate to the various branches of historical inquiry都是形容词短语，分别修饰concepts和research techniques。