Don and his family decided to take a summer vacation. They wanted to go somewhere tropical, so they decided to visit a United States territory in the Caribbean Sea. Where did Don’s family go?
A.
Hawaii
B.
Mt. McKinley
C.
the Virgin Islands
D.
the Grand Canyon

The correct answer is "the protesters were attacked by chinese troops and many were killed or arrested."

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.