Question

たんぽぽ

下線部の文構造が分かりません
neverthelessがどこにかかるのか教えて頂きたいです！

This may sound strange, but tests have now been carried out which reveal
(6)
that it is nevertheless the true explanation. Groups of new-born babies in a
hospital nursery were exposed for a considerable time to the recorded sound of a
heart-beat at a standard rate of 72 beats per minute. There were nine babies in