<p>If someone could please explain why this sentence is wrong, what grammar the sentence is testing and why the answer is D when I thought Passive was bad- doesn't D turn the sentence to passive? </p>
<p>The ancient Spartans tested the endurance of potential [warriors, devised] various ordeals, including one that required them to run bare-legged through fields of stinging nettles</p>
<p>A) warriors, devised
B) warriors devising
C) warriors; and devised
D warriors by devising
E) warriors with the devising of </p>
<p>An easy way to detect if a sentence is passive is checking if it has a form of the verb “to be,” which none of the answers have. The sentence would be passive if it said: The endurance of potential warriors WAS TESTED by the Spartans by devising various ordeals.
A and B: the modifier is misplaced. The Spartans devised the ordeal, not the warriors.
C: semicolon must be followed by an independent clause. This answer has no main subject after the semicolon
E: wordy</p>