Correct Answer = D.
<p>The high peak pressure in association
     with the relatively normal plateau pressure indicates high
     airways resistance, such as one would expect during acute
     bronchospasm, kinking or encrustation of the endotracheal
     tube, and/or partial mucus plugging.  Right mainstem
     intubation, pneumothorax, ARDS, interstitial lung disease, and
     restrictive chest wall disease would all result in high peak
     pressures AND high plateau pressures indicating reduced
     compliance and normal airways resistance.