How can multiple indexes be deleted in MongoDB?

The command to delete multiple indexes in MongoDB is achieved through the use of db.collection.dropIndexes(). This method is specifically designed for dropping all indexes on a collection, which includes the default index on the _id field along with any other user-defined indexes.

When you invoke dropIndexes(), it efficiently removes multiple indexes in one call without the need to specify each index individually, streamlining the process. This is particularly useful when you want to clean up a collection by removing unused or unnecessary indexes, thus potentially improving performance and storage efficiency.

The other commands mentioned are either designed for specific actions or do not exist as valid MongoDB commands. For instance, removeIndexes() and deleteIndexes() are not valid MongoDB commands, and dropIndex() is intended for removing a single index at a time, which would not be suitable when you need to delete multiple indexes. Thus, db.collection.dropIndexes() is the appropriate choice for this action.