I'm just doing a practice test and I got the following question and answer choices. I chose A, but the correct answer was B. I know why A was wrong, but I don't get how B is right, since we don't know what "its" is referring to. The section is on present participle phrases and this is considered a "hard" question. Please help and let me know your thoughts.
EDIT: To clarify, I know that "its" in B is referring to "the study," but given that this is a mid-sentence nonrestrictive noun modifier, the sentence should still stand if you cross out the "
since the study has demonstrated that people can change gene expression by meditating" portion, which it cannot, because we don't know what "its" is referring to.
Having demonstrated that people can change gene expression by meditating, it is the head researcher's opinion that the study will likely have a significant impact on the field of epigenetics.(a) Having demonstrated that people can change gene expression by meditating, it is the head researcher's opinion that the study will likely have a significant impact on the field of epigenetics.
(b) The head researcher's opinion is that, since the study has demonstrated that people can change gene expression by meditating, its having a significant impact on the field of epigenetics is likely.
(c) Having demonstrated that people can change gene expression by meditating, there is a likelihood that the study will have a significant impact on the field of epigenetics in the head researcher's opinion.
(d) The head researcher's opinion, having demonstrated that people can change gene expression by meditating, is that it is likely that the study will have a significant impact on the field of epigenetics.
(e) The study, having demonstrated that people can change gene expression by meditating, has a likelihood that will have a significant impact on the field of epigenetics in the opinion of the head researcher.