Astronomers have theorized that the Big Bang governs the behavior of interstellar dust, particles that comprise the atoms and molecules created in the progenitive explosion and persisting in even the emptiest regions of space.My vote is for answer B.
d) they persiste
e) are persisting
Please explain your answers!!
In my opinion we are looking for another verb here (present tense) and we are looking at the behavior of particles. Persisting does not hold good in the grammatical sense in lieu with the sentence completion.
Whats the OA??