Final answer:
The Ctrl-C keypress sends the SIGINT signal to a process, not KILL, TSTP, or TERM as listed. SIGINT stands for 'signal interrupt' and is used to terminate a process running in a terminal.
Step-by-step explanation:
The signal sent to a process when the Ctrl-C key is pressed is SIGINT, which stands for "signal interrupt". The possible options provided are KILL, TSTP, and TERM, among which the correct match is not explicitly listed as these options represent different signals. The key code Ctrl-C is commonly used to interrupt a process running in a terminal in Unix-like operating systems. It sends a SIGINT signal that tells the process to terminate itself. Meanwhile, KILL corresponds to SIGKILL, TSTP corresponds to SIGTSTP (which suspends the process), and TERM corresponds to SIGTERM (which requests the process to terminate).