Answer:
Defend and challenge are pretty much the opposite of each other here. To defend an argument is to persuade others why the argument is sound. To challenge an argument means you are arguing against IT.
Explanation:
I do not have fun when I am sent on errands. Errands are busy-work and I am already an extremely busy person! When I go on an errand, I get in there and I get it done. I try to complete my objective as fast as possible.
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