In the following conversation, which discussion technique do Emily and Han most clearly show?

EMILY:

Hold on — earlier you admitted that we don't have enough butterflies to pollinate all the fruit trees.

HAN:

Yeahhhhh . . . ummmm . . . I did say that . . . And I still believe it . . . But still . . . we don't have enough evidence to prove that the human race will die out if bees become extinct.

AResolving contradictions

BUsing multiple sources

CIdentifying bias

DCreating a research plan