Highlight the command which used to create a file in a specified directory?2.0 Marks#less filename#cat filename#insert filename#touch filename

To create a file in a specified directory in a command-line environment, the correct command from the options provided is:

touch filename

Explanation:

1. touch filename: This command is used to create an empty file with the specified name if it does not already exist. If the file does exist, it updates the file's timestamp without modifying its contents.

2. less filename: This command is generally used to view the contents of a file but does not create a file.

3. cat filename: This command concatenates and displays the content of files but does not create a new file.

4. insert filename: This is not a standard command in most command-line interfaces for creating files.

In summary, to create a file, use the touch command followed by the desired filename.