Why is this considered a theory instead of a hypothesis or a law?

Deaths by traffic accidents are more likely to occur in a. high-income countries b. middle-income countries c. agrarian nations d. poor countries e. industrialized nations

The color contrast between the open ocean and the lagoon between the spit and the mainland. the greater concentration of suspended sediments in the lagoon gives the waters a more turbid appearance. the source of sediment in the lagoon is (are) [(rivers and streams from the mainland) (wind-borne sediment from the spit) (ocean waves washing over the spit) (all of these contribute)].

Which soil horizon, also known as the zone of accumulation, is enriched in clay, iron oxides, silica, carbonate, and other materials?