In her introduction to her speech about eating disorders, sheila told the story of her friend who almost died of anorexia. in her conclusion, she reminded her audience of what her friend went through and explained that her friend was currently doing well in her battle against the disease. was this an appropriate strategy for her speech

Yes; this is a concluding strategy known as an introduction

source:https://quizlet.com/5604703/speech-final-flash-cards/

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.