It can be found in every area of life, from the way you decorate your resdence to a new way of understanding how a cell works

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.

answer; i believe the correct answer is (117);

the answer to your question is,

old stone age.

-mabel < 3