<span> D. Ionic bonds...........................................................................</span>
Generally people would say that the result are published in journals, and it is true that Journals are often the first opportunity for many people to read about those results.
However, it takes a long time to publish in a journal, and people often present their results to a smaller audience at a conference before the journal is ready.
Is there a blank at the end of this statement?
If there is then the blank would be filled in with SPECIES