There are a few options that you could consider to provide adequate protection against accidental deletion of objects in Amazon S3:

1. Use versioning: You can enable versioning for your Amazon S3 bucket, which keeps track of all versions of your objects (including all deletions). This way, if an object is accidentally deleted, you can recover it by restoring the deleted version.
2. Use object locking: You can enable object locking for your Amazon S3 bucket, which allows you to lock objects so that they cannot be deleted or overwritten for a specified period of time. This can help prevent accidental deletion of objects.
3. Use cross-region replication: You can set up cross-region replication for your Amazon S3 bucket, which replicates objects to a destination bucket in a different region. This can provide an additional layer of protection against data loss due to accidental deletion or other issues in the primary region.
4. Use Lifecycle policies: You can use Lifecycle policies to automate the transition of objects to different storage classes or to delete objects that are no longer needed. This can help reduce the risk of accidental deletion by ensuring that objects are only retained for as long as they are needed.