Final answer:
In the scenario where Mariah and her sisters are disputing chore assignments, conflict management is the key leadership function needed, with negotiation and clear communication being essential.
Step-by-step explanation:
The leadership function most needed in the situation where Mariah and her sisters are picking their chores for the week is conflict management. The sisters are engaged in a disagreement over who should do which chore, illustrating the necessity to manage the conflict effectively. Clarissa is willing to do the dishes but wants someone else to take care of the trash, whereas Cassandra is frustrated by what she perceives as an unfair distribution of chores.
Effective conflict management would involve negotiating chores, discussing expectations, and ensuring that each sister's concerns are addressed. This might involve establishing a rotating chore schedule or coming to a consensus on who is responsible for what, ensuring fairness and clarity moving forward.