Answer:
A. Human relations skills
Step-by-step explanation:
From the following skills, the skill that is most attributed to Lara's success in the given context is "Human relations skills."
Because human relations skill is basically a type of skill in which person interact with one and another and also posses some qualities such as making of decision and leading a group of peoples as well.
As we can see that Lara also posses these qualities, that she is convincing her team members, and negotiating that includes interaction. Now we can say that Lara has "Human relations skills."