It's a reasoning question. From the table, you can see that as the temperature in each sucessive trial increases, the length of the wire slightly increases, as well. You're supposed to already know that as length increases, so does resistance. And that as resistance increases, current decreases.
Therefore, D is the
only answer that would make sense if the resistance is increasing, because it's the only answer where the current is changing (automatically ruling out answers A & B)
and decreasing (ruling out answer C). No calculations were necessary.
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