Which of the following is not a branch of natural science?
a. life science
b. earth and space science
c. physical science
d. social science

It is letter D: social sciences. Because aside from the choices above, social sciences are the only sciences that the life of human beings. The disciplines are Psychology, Sociology, Economics, Anthropology, Humanities, Geography, History and many more. While the rest of the choices are Natural Sciences, defined as anything that deals with natures’ laws and theories. The disciplines are Physics, Chemistry, Biology, Earth Science and many more. When both are compared, Natural Sciences is more empirical than the Social sciences as it requires 1 percent room for error.

Idon't know it i just need my points lol