Urban Planner: The installation of green roofs in urban areas can reduce the overall city temperature during summer months, thereby reducing the need for air conditioning and energy consumption. However, despite their benefits, the widespread adoption of green roofs has been slow. This is because the initial cost of installing green roofs is considerably high, and because __________.
Which of the following, if true, most logically completes the urban planner’s argument?
Quote:
(A) there are sufficient numbers of skilled laborers available to install green roofs
The statement does not provide reasons why widespread adoption of green roofs has been slow. If there are sufficient numbers of skilled laborers available to install green roofs, widespread adoption of green roofs should have been faster.
Incorrect
Quote:
(B) green roof materials are often sourced from suppliers who are located far from urban centers
The statement provides some reasons why widespread adoption of green roofs has been slow. If green roof materials are often sourced from suppliers who are located far from urban centers, then there may be methods to procure from these suppliers and to sell at urban centers. There may be distributers who can facilitate the process.
Incorrect
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(C) tax incentives for green construction projects are commonly available in urban areas
The statement does not provide reasons why widespread adoption of green roofs has been slow. If tax incentives for green construction projects are commonly available in urban areas, widespread adoption of green roofs should have been faster.
Incorrect
Quote:
(D) traditional roofing solutions are generally less expensive and quicker to install than green roofs
The statement provides reason why widespread adoption of green roofs has been slow. Since traditional roofing solutions are generally less expensive and quicker to install than green roofs, widespread adoption of green roofs has been slow.
Correct
Quote:
(E) green roofs typically last longer than traditional roofing materials, thus potentially saving money over time
The statement does not provide reasons why widespread adoption of green roofs has been slow. If green roofs typically last longer than traditional roofing materials, thus potentially saving money over time, widespread adoption of green roofs should have been faster.
Incorrect
IMO D