Final answer:
Marcos displayed the customer service characteristic of problem-solving by listening to customer feedback, seeking out solutions, and implementing effective measures.
Step-by-step explanation:
Marcos displayed the customer service characteristic of problem-solving. He listened to the feedback from customers and sought out solutions from the customer service clerks.
He then implemented a solution by buying floor markings to show customers where to line up for each cash register, resulting in a more efficient and complaint-free experience for the customers and reduced stress for the clerks.
The customer service characteristic Marcus displayed was a refusal to engage in an illicit activity. Marcus was approached by Maria Macapa to buy a ticket in a lottery, which he recognized as being against the law.