ok, before candidate Biden took the OATH for office, could he not have been put under OATH with PENALTY of PERJURY and be asked about his business dealings with China & Ukraine?

The correct answer is "bantu".

My opinion is that it doesn't

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.