Matt makes gifts for his family in preparation for their return. Why does Matt believe they will return?

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.

the answer would be c. sediment buildup on continental slope

                                                                                -hope this -

the answer to your question is,

old stone age.

-mabel < 3