Which method is used to retrieve a product by its ID in SFCC?

The method used to retrieve a product by its ID in Salesforce Commerce Cloud (SFCC) is correctly identified as ProductMgr.getProduct(productId). This method is specifically designed for fetching product information based on the provided product ID, making it straightforward for developers to access product data required for various functionalities within an e-commerce platform.

In the context of SFCC's architecture, accessing products efficiently is critical for performance, especially in environments with large catalogs. The getProduct method ensures that developers can retrieve the appropriate product details needed for presentation or processing without having to manage complex queries or data structures manually.

The other methods mentioned do not align with the established API for product retrieval within SFCC, which is why they are not suitable in this case. They might involve different purposes or might not exist in the current API structure, focusing instead on functionality that doesn’t directly correspond to retrieving a product by its ID. Understanding the correct method enhances a developer's ability to utilize the SFCC platform effectively and efficiently.