It has to do with voicing assimilation (voiced sounds vs, unvoiced sounds at the end of the word stem.) before the suffix is added.
Explanation:
Ex....
'P' is a voiced consonant (with your hand in front of your mouth, you feel a puff of air on your hand), so it's phonologically easier (more natural) to say a '-t' sound immediately afterward.
'N,' in contrast has no puff of air, so it's a voiceless sound.
Schools can use written materials about television to explore its place in today’s culture and to teach reading, writing, and thinking skills is the correct answer.
Heyy im reading that right now! :) The first two chapters reveal how human nature of the average person is very innocent and innately good, shown when Jack hesitates to kill the pig because he is scared.