Answer:
Explanation:The boat will take one person at a time.The both will take one person to her destination and will come back to take the other person.
If this means is used,there will be no need for swimming and walking around.
I would say D) Geology. That's a whole other subject itself. Economics, geography, and history all fit into the category Social Studies. That is things happening around the world. Social stuff. Hence the name Social Studies. So once again, D is your answer. Geology is about the science that deals with the earth's physical structure and substance, its history, and the processes that act on it.<span> The geological features of an area.</span> That would not fit in.
~Silver
rights unlisted in the Constitution
Tools, bones, artifacts such as pottery, etc.
