Final answer:
Marti's success in having her bid accepted over a higher bid demonstrates the strategy of offering a cash offer.
Step-by-step explanation:
Marti's success in having her bid accepted over a higher bid demonstrates the strategy of offering a cash offer. By offering to purchase the property with cash instead of financing, Marti was able to close the deal quickly, which was important to the seller who wanted to purchase another property. This strategy gave Marti an advantage over her competitor who had to go through the process of borrowing money and obtaining financing.