Last one, which one is it?

Clearly show? ramona: anna, where does the theme seem to change? anna: according the article: "the fault lies with the fda's inability to release enough information in order to regain the public's trust. but perhaps japan is to blame as well. although there are plans to remove the spent nuclear fuel rods and build a permafrost wall around the four damaged reactors, is this really enough to recover damaged trust? " and then sato goes on to explain this statement. o a. challenging established ideas o b. using evidence to support your conclusions o c. asking clarifying questions o d. synthesizing claims into a single conclusion