Following are groups of three phrases, which group states three ways to improve your concentration? a)stretch before studying, take breaks every 15 minutes, lie down while reading b)keep your cell phone on, sign on to im, check your e-mail regularly c)set up a study space, preview your materials, create a routine d)study in the most comfortable chair, listen to music, have a snack near by

Consider the following statements, then select one of the answers below: the signal() function shown below registers "sig_handler()" as the signal handler function for the sigkill signal, without the complexity of using when the sigkill signal is sent to a process running this code, by a user typing "kill -kill ", where the correct process id is used for to target the process, sig_handler() will be executed.