Mismatched premises. (A) concludes that we shouldn’t fully perform an action, but this is because doing so would have negative consequences, not because it’s too much effort. The stimulus never establishes any negative effects of fully weeding a garden outside the effort involved, so (A) doesn’t match.

Mismatched premises. (B) concludes that we shouldn’t fully perform an action, but this is because doing so would have negative consequences, not because it’s too much effort. The stimulus never establishes any negative effects of fully weeding a garden outside the effort involved, so (B) doesn’t match.

(C) proceeds by presenting an action (improving one’s personality) that has positive effects. It then prescriptively concludes that one should not fully perform this action because it’s not worth the effort. Essentially, you should only remove most imperfections because it’s not worth the effort to remove the last few.

Mismatched premises. (D) concludes that we shouldn’t try to fully perform an action, but this is because doing so is impossible, not because it’s too much effort. The stimulus never tells us it’s impossible to fully weed a garden, so (D) doesn’t match.

Mismatched premises. (E) concludes that we shouldn’t fully perform an action, but this is because doing so would have negative consequences, not because it’s too much effort. The stimulus never establishes any negative effects of fully weeding a garden outside the effort involved, so (E) doesn’t match.