The following is a code snippet. The output to the screen will be

a. Nothing will be printed to screen.

b. one line of "Task completed".

c. a listing of files and directories in the current directory.

d. a listing of files and directories in the current directory, followed by one line of "Task completed".

e. a listing of files and directories in the current directory, followed by two lines of "Task completed".

pid = fork(); if (pid == 0){ execlp("ls", "ls", "-1", "-a", "-", (char *)0); printf("Task completed "); } else if (pid > 0) { wait (NULL); printf("Task completed "); }