It is the obligation of researchers to review and comment on the research of other researchers.
t or f

True
I think that it's true because: what if the research is wrong, or needs to be improven?

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.