You need to defragment an etcd database and verify a snapshot file offline. Which tool is intended for that?

Answer: A. etcdutl

etcdutl works directly on etcd data files — defragmenting, restoring snapshots, migrating versions — while etcdctl is the client for network operations against a running cluster.

Source: Operating etcd clusters for Kubernetes (Kubernetes) — Understanding etcdctl and etcdutl