Which of the following is a service provided by MasterCard?

MasterCard offers a variety of specialized services to enhance the security and convenience of card usage, and Emergency Cash Service is one of them. This service is particularly important as it provides cardholders with access to emergency cash when they find themselves in a situation where their card is lost, stolen, or otherwise unavailable. It allows cardholders to receive cash from designated locations, ensuring that they can manage unexpected circumstances without payment options.

While other services like Fraud Alert Notifications and Cardholder Account Management are relevant to the broader financial and banking ecosystem, they are not specifically exclusive to MasterCard. Additionally, Online Banking Services are typically offered by financial institutions rather than by card networks like MasterCard. Hence, focusing on the unique and direct offerings by MasterCard leads to the identification of Emergency Cash Service as the correct response.