【单选题】"Chinese billionaire Jack Ma has donated medical supplies to various African countries through the Jack Ma Foundation and Alibaba Foundation ." In this sentence, the word "foundation" means ______.
A.
the solid underground base of a building
B.
a principle, an idea or a fact that sth is based on and that it grows from
C.
an organization that is established to provide money for a particular purpose
D.
the act of starting a new institution or organization