Choose the compounds from the list below whose samples may be optically active.

I found 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.

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.