18. Which one of the following characteristics is typical of benign tumors?
A. They usually cause some harm to the body.
B. They're often contained by a well-defined membrane.
C. They often grow back after they have been surgically removed.
D. They grow rather rapidly.

What is republicanism? a. a form of government in which power is concentrated in one political party b. a form of government in which power is held by the poople and exercised by elected representatives. c. a form of govenment in which power is divided betweon the state and national levels. d .a form of government in which power is divided among co-equal branches