Explanation
The command pwd stands for "print working directory". It will print the absolute path of the current working directory to the terminal. For example, if we are currently in the /home/user/directory, it will print out that exact path1. The pwd command is useful for finding out where we are in the file system hierarchy and for verifying the location of files and directories2.
The other options are not commands that show the absolute path to the current working directory. The who command shows the users who are currently logged in to the system3. The cd ... command changes the current working directory to the parent directory of the current one2. The ls -l command lists the files and directories in the current working directory in a long format, which shows the permissions, ownership, size, date, and name of each file and directory2. The cd ~/home command changes the current working directory to the /home directory under the user's home directory, which may or may not exist2. References:
* Linux Essentials Exam Objectives, Version 1.6, Topic 103.1, Weight 2
* Linux Essentials Certification Guide, Chapter 3, Page 51-52
* How to Get the current directory in Linux - howtouselinux
* How To Find The Absolute Path Of A File Or Directory In Linux - systranbox