All modern economies use some combination of and .
A.
capitalism . . . socialism
B.
market forces . . . capitalism
C.
central planning . . . government
D.
market forces . . . central planning

i would tend to believe a is the correct answer

Explanation:

because capitalism and socialism is in every society

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.

elastic potential energy