Rebecca and Farah have been best friends since fourth grade. They have grown up together and have shared everything with each other. However, when Farah meets Alison at college and makes it a point to include her in all the activities that Rebecca and Farah used to do together, the nature of Rebecca and Farah's relationship and their interactions changes. In this scenario, the change in Farah and Rebecca's relationship is MOST likely because o

the transformation of their group from a dyad to a triad

Explanation:

In the scenario presented in the context, the relationship between Rebecca and Farah changed as Farah included her new friend, Alison to the group and did all the things or activities which Rebecca and Farah used to do together earlier.

The dyad group of Rebecca and Farah changed to triad when Alison was included in the group which affect the relationship between both the friends Rebecca and Farah.

answer; earthquake;