D. Universal Law of Gravitation.
It is true that situational context is the social and environmental setting in which a particular behavior takes place.
The development of seeds are considered to one of the most important in the evolution of land plants especially the spore-bearing vascular plants. The seeds will serve as the alternative means of dispersal for reproduction purposes especially in areas where there is no water.
The world use to be just one big super continent until the tectonic plates and earths surface broke it apart into the 7 continents now. Basically the world was all connected so the plant and animal fossils would have been in the same place at the time.