Several studies showed that after drinking an energy drink, subjects had increased performance when running a marathon. a beverage company financed this research. what is wrong with this study?
a. precise numbers
b. voluntary response number
c. deliberate distortion
d. self-interest study
e. partial picture
f. noneresponse

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.

Gbdbd. f f. f f f. s. s d d d. s d. s don’t d d d d d d d d d