In MS-DOS, which command or option suppresses the confirmation prompt when deleting a directory and its contents?

Introduction / Context:
Deleting directories in DOS often requires care to avoid accidental data loss. The DELTREE command removes a directory tree, and DOS normally asks for confirmation. There is a specific switch to bypass that prompt, which technicians used in scripts or automated maintenance tasks.

Given Data / Assumptions:

• The goal is to delete a directory without a confirmation prompt.
• We are constrained to choose among the listed options.
• Accurate DOS syntax matters: only the correct switch actually suppresses the prompt.

Concept / Approach:

In DOS, the correct syntax to suppress confirmation is DELTREE /Y . The /Y switch answers "yes" to all prompts automatically. None of the provided options include /Y. DELTREE alone still prompts. DELTREE/F is not a standard switch. DEL . and ERASE . affect files, not directories recursively, and still may prompt depending on settings.

Step-by-Step Solution:

Verification / Alternative check:

Microsoft DOS reference confirms /Y as the non-interactive switch for DELTREE. No official /F switch exists for this command in standard MS-DOS.

Why Other Options Are Wrong:

• DELTREE: prompts for confirmation.
• DELTREE/F: invalid switch and still would not suppress confirmation.
• DEL.* / ERASE .: do not remove directories recursively and may still prompt.

Common Pitfalls:

• Assuming any switch (like /F) applies; DOS command switches vary by command.

Final Answer:

None of the above.