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.
A. Resolving contradictions
B. Using multiple sources
C. Identifying bias
D. Creating a research plan