A developer needs to fetch several specific items from a DynamoDB table using a single API call while minimizing load on the database. Which DynamoDB API should be used?

BatchGetItem is the most efficient choice because it allows fetching up to 100 items from one or more tables in a single API call. This minimizes the number of round trips to the database, reducing latency and overall load compared to making individual GetItem calls. GetItem retrieves only a single item, requiring multiple calls for several items. Scan reads all items in a table (or a large portion if filtered), which is inefficient and costly for fetching specific items. Query retrieves items based on a primary key and an optional sort key, but it's designed for a single partition and doesn't offer the multi-item, multi-table efficiency of BatchGetItem for disparate items.