<span>As the door slowly creaked open, Jessie peered carefully into the vast darkness, holding her breath.
The "slowness" of the creaking door and the "vast darkness" add a weight to the sentence unlike the others. </span>
I say true since it says they "have a better chance at being successful" instead of a definite chance.
<span>Jeff fell asleep in his chair while Elizabeth was delivering a speech on the effects of pollution on the atmosphere. This is an example of failing to listen ethically.
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