The evidence differed in the two passages because Passage 1 uses logical evidence, while passage 2 uses logical and anecdotal evidence.
This is an available body of facts or information indicating whether a belief is true or valid or supports a proposition.
Logical evidence is a fact or inference drawn from facts to prove or disprove an idea using logic.
Anecdotal evidence is in form of stories that people tell about what has happened to them which does not necessarily use data.
Hence, the evidence in Obama's speech used logical evidence to drive his point, while in passage two uses both logical and anecdotal evidence.
Therefore, the correct answer is option D.
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