A bite of wisdom
Which word refers to an essential element of a system or idea?
Come back tomorrow
for more questions!
1. the central principle or part of a policy, system, etc., on which all else depends
"cooperation remains the keystone of the government's security policy"
-
Choice "A": Satellite % of users selected this choice.
-
Choice "B": Keystone % of users selected this choice.
-
Choice "C": Branch % of users selected this choice.
-
Choice "D": Appendix % of users selected this choice.