Which method can be used to log purchases in the Braze SDK?

The method that can be used to log purchases in the Braze SDK is logPurchase(_:currency:). This method is specifically designed for tracking in-app purchases by taking the purchase amount and the currency in which the transaction is made.

This capability is crucial for mobile applications as it allows developers to gather insights on user spending behavior and overall revenue generated through in-app purchases. Accurately logging these transactions helps provide granular analytics for understanding user engagement and monetization, thus enabling targeted marketing efforts and personalized user experiences.

The other options do not align with the functionality provided by the Braze iOS SDK for logging purchases. They may reference different types of transactions or tracking methods that are not specifically designed for in-app financial transactions, making them unsuitable for this scenario.