3.) a driver must stop for a pedestrian in the road: a) at all times b) only when they are crossing at a crosswalk c) only when they are crossing legally d) only when it is convenient e) none of the above

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii