What do you think? Someone will be glad to check your answer.
http://www.enchantedlearning.com/grammar/prefixsuffix/
which is a combining form not a prefix or suffix
A patho
b centesis
c opsy
d retro
3 answers
If you are unsure what these words/choices mean, please look them up:
http://www.merriam-webster.com/
http://www.merriam-webster.com/
Patho.