Researchers have observed the invasive insect pest, the spotted-wing drosophila (SWD), and its attraction to the odors of naturally occurring yeast and fermentation in fruit crops where it lays its eggs. If the smell could be masked with the scents of essential oils such as rosemary and thyme, ______ The students at the University of Minnesota were determined to find out.
Which choice completes the text so that it conforms to the conventions of Standard English?
8/13
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