Answer:
is this a question meant to evaluate you, such as a test, exam, quiz, or assessment?
The answers are:
a. physical geography
b. human geography
Geography is divided into two main branches, physical geography, and human geography, and after that, they branch out much more and include the other geographical disciplines in them.
Physical geography is mainly concerned with the study of the natural characteristics of the Earth, both the ones on the surface and the once close to the surface.
Human geography is mainly focused on the study of the human race, the background, perceptions, interactions, organizing, human groups, effects on and from the environment etc.
-- so that other scientists can reproduce your experiment in their labs
-- so that when you go back and read your own experiment next year,
you'll be able to remember and understand what you did
The answer is A, Thomas Jefferson. Hope this helps.