Answer:
Warden Louise Walker is the main antagonist of Holes. She is the granddaughter of Charles "Trout" Walker and Linda Walker. The Warden is shown to have been digging holes as she grows up and does nothing else other than trying to finish the work of looking for the treasure of Kissin' Kate Barlow (Katherine Barlow).
Explanation:
It’s (D) because it’s the only one that makes sense when you read it out loud
A. because Building ends in ing which specifies it as a verb functioning as a noun
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