Which of the following configuration files would an administrator edit to change default options for outbound ssh sessions?

/etc/ssh/sshd_config is the configuration file for the SSH daemon (server), controlling incoming SSH connections, not outbound client connections.

/etc/ssh/ssh is typically the SSH client executable itself, not a configuration file.

/etc/ssh/client is not a standard configuration file name for SSH client options.

The `/etc/ssh/ssh_config` file is the system-wide client configuration file for SSH, where default options for outbound SSH connections (like host aliases, connection parameters, etc.) are defined. These settings apply to all users unless overridden by a user's `~/.ssh/config` file.

/etc/ssh/ssh_client is not a standard configuration file name; the correct system-wide client configuration is `ssh_config`.