고3 6월 모의 23번 문제입니다.The so-called Mozart effect ― listening to Mozart will make your child smarter ― is a good example of _____________________ by the media through hype not warranted by the research. It all started when researchers reported that after exposure to a selection of Mozart’s music, college students showed an increase in spatial reasoning for about 10 minutes on tasks like putting together pieces of a jigsaw puzzle. Note first that the research was done on college students, not infants, and that the effect was very brief. In addition, no one’s been able to replicate the research. The increase in spatial reasoning, it turns out, can be generated by any auditory stimulation (e.g., listening to a short story or other types of music) that keeps people alert while being tested. However, none of this has stopped eager parents ― spurred on by fantastic claims from unethical companies ― from purchasing Mozart CDs for their babies. 마지막 문장 none of this에서 this가 가리키는 것은 무엇입니까?
이것들 중 어떤 것도~ 이런 식으로 해석해서 this가 아니라 these가 아닌 이유도 궁금합니다.
this가 가리키는 것이 여러 가지인 듯 한데, 정확히 어떠어떠한 것으로 본문에서 선택하면 되는 지 궁금합니다.

정말 감사드립니다.