In a all about me paragraph what should i write

Read the excerpt below and answer the question. she was a small woman, short and straight-waisted like a child in her brown cotton gown. her forehead was mild and benevolent between the smooth curves of gray hair; there were meek downward lines about her nose and mouth; but her eyes, fixed upon the old man, looked as if the meekness had been the result of her own will, never of the will of another. in at least one hundred words, explain how this excerpt uses explicit and implicit details to describe sarah penn.

How can behavioral science be applied in improving public health? a.by tracking a disease to determine its sourceb.by creating promotions that improve health habitscboth by tracking a disease to determine its source and by creating promotions that improve health habitsd.neither by tracking a disease to determine its source or by creating promotions that improve health habits

This is a set of words that begins with a preposition.