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Which of the following most logically completes the argument?
A common approach to algae cultivation involves covering a pond with a greenhouse, instead of leaving the pond uncovered. Because there is a practical limit on the size of a greenhouse, this method limits the extent of the algae-growing system. Nevertheless, covering the pond results in a much higher algae yield because.
A. the greenhouse prevents contamination from invasive bacteria, which can destroy entire species of algae
B. the greenhouse changes the quality of sunlight that reaches the algae, causing more frequent genetic mutations
C. leaving the pond uncovered is an acceptable solution depending on the species of algae being cultivated
D. covered ponds better mimic the artificial environment of a photobioreactor, which is the most effective tool to preserve certain threatened types of algae
E. the limited available space makes it more likely that only one species will be cultivated in a given pond
OA A
A common approach to algae cultivation involves covering a pond with a greenhouse, instead of leaving the pond uncovered. Because there is a practical limit on the size of a greenhouse, this method limits the extent of the algae-growing system. Nevertheless, covering the pond results in a much higher algae yield because.
A. the greenhouse prevents contamination from invasive bacteria, which can destroy entire species of algae
B. the greenhouse changes the quality of sunlight that reaches the algae, causing more frequent genetic mutations
C. leaving the pond uncovered is an acceptable solution depending on the species of algae being cultivated
D. covered ponds better mimic the artificial environment of a photobioreactor, which is the most effective tool to preserve certain threatened types of algae
E. the limited available space makes it more likely that only one species will be cultivated in a given pond
OA A
