Which of the following options can be used with the usermod command to change the primary group of a user?Select one:a.-Ub.-Lc.-Nd.-g

Break Down the Problem

1. Identify the command in question: usermod.
2. Understand what the usermod command does.
3. Determine which provided option is valid for changing the primary group of a user.

Relevant Concepts

• The usermod command in Unix/Linux is used to modify a user's account. One of its options allows for changing the primary group of the user.

Analysis and Detail

• The options provided are:
  1. -U
  2. -L
  3. -N
  4. -g

The option -g is specifically used to change the primary group of a user. The other options are not related to changing the primary group:

• -U: Unlock a user's account.
• -L: Lock a user's account.
• -N: Remove a user's password.

Verify and Summarize

The only option that pertains to changing the primary group of a user is -g.

Final Answer

The correct option is d. -g.