The correct answer is C. head.
The head command is used to display the first few lines of a file. The number of lines to display can be specified as an argument to the command. For example, to display the first 10 lines of a file called foo.txt, you would use the following command:
head -n 10 foo.txt
The grep command is used to search for a pattern in a file. The pattern can be a regular expression, or it can be a literal string. For example, to search for the word “hello” in a file called foo.txt, you would use the following command:
grep hello foo.txt
The more command is used to display the contents of a file one page at a time. The user can press Enter to advance to the next page, or q to quit. For example, to display the contents of a file called foo.txt, you would use the following command:
more foo.txt
The cat command is used to concatenate and display the contents of files. The files can be specified as arguments to the command, or they can be taken from standard input. For example, to display the contents of a file called foo.txt, you would use the following command:
cat foo.txt
To display the top of a file, you can use the head command. The head command displays the first few lines of a file. The number of lines to display can be specified as an argument to the command. For example, to display the first 10 lines of a file called foo.txt, you would use the following command:
head -n 10 foo.txt