The Manhattan Project was B) The plan to develop atomic bomb.
The Manhattan Project was an examination/advancement project to construct the first nuclear weapons. During the date of the testing, World War II was taking place. A pair of atomic devices were made during the war, but that is not all the project consisted of. Another part of the project centralized on gathering knowledge of the German nuclear weapon project as well.
Natural law is the higher order positive law which emerged from the philosophers of ancient age. Stoic reformers believed that law of nature is the supreme law which connects man and nature to live in harmony with each other.
Aristotle says that though man perceives things and frames laws to live an orderly life, the natural law is universal and a common law exists which is divine.
Natural rights are the rights which are believed to be inherited by birth of a man. These are natural birth rights and they are the base for the founding fathers to frame the US Constitution.
They believe that governments should meddle into things like economy to improve the lifestyle of others. Socialists usually claim that it is necessary for a government to intervene and deal with businesses and the economy because that ensures that there's equal rights for all people and people are protected from exploitation and monopolies and similar things.