Answer:
I'm pretty sure it's #2. Sorry if I am wrong.
This is an example of A. Assimilation. In this case Moishe is taking on a common name of the local community/culture in which his family has migrated into. By choosing a common name he will "blend in" with the other children. To assimilate, means to replicate or copy.
Unionization, cronyism and maturation are not appropriate to this situation.
C) leaving the landfill open so animals can help consume the waste
Tree diagrams display all the possible outcomes of an event. Each branch in a tree diagram represents a possible outcome. Tree diagrams can be used to find the number of possible outcomes and calculate the probability of possible outcomes.