Read the sentences below. Click or tap TWO underlined phrases that BEST help the reader understand the meaning of the word trudge.
Last night it snowed a lot. Jason knew he would have to trudge six blocks
to the school bus stop. His legs would get tired from his slow, heavy steps.

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.