(A) for me. Time taken 1:12.
The argument talks about the similar costs of installation for both single pane and double pane windows. We need to evaluate if the double-pane window have any other associated high costs, such as "high-maintenance", "frequent replacements", etc. Because if an another malicious variable exists then the author's conclusion that this change would lead to "less expenditures on physical facilities" would seem shaky.
Option (A) does that nicely
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The argument talks about the similar costs of installation for both single pane and double pane windows. We need to evaluate if the double-pane window have any other associated high costs, such as "high-maintenance", "frequent replacements", etc. Because if an another malicious variable exists then the author's conclusion that this change would lead to "less expenditures on physical facilities" would seem shaky.
Option (A) does that nicely
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