Amodel of long-term relationships that examines the ways that commitment, investment, and the availability of attractive alternative partners predict satisfaction and stability in relationships, is describing which of the following?
a) investment model
b) social exchange theory
c) evolutionary approach
d) romantic love

Investment model

Explanation:

The investment model is based on the four models.  

Satisfaction: It is related to positive and negative experiences in life.  

Investment size: It is related to the magnitude and the importance that attached a relationship.

Quality of alternatives and commitment: It is about the perception of the relational rivals in which a person completes his most important need.  

Commitment: It is related to the commitment in a relationship for the long term orientation and feelings related to the psychological attachment.  

its a hope it good luck