The answer is “who” referring to one person
Its D cause,key words''practices,belifes''. Hope it helps.
Answer:
He believes that all living things are important.
Explanation:
I think this because he has an importance for other things and not just himself or other people, but I haven't read the full passage so this could be marked as maybe correct. good luck though.
First developed by Karl Marx and Friedrich Engels in the mid-19th century