¿quienes desarrollaron todo el proceso del cultivo y procesamiento del café?
a. arabes
b. españoles
c. mexicanos
d. africanos

answer is a: las

explanation:

the reason for this answer is becouse it's a plural frase which talks more then one thing

not sure the question, but this translates to

"as you can see justice and injustice in the novel ¨the suspicious truth¨

i need "

hope that , let me know if you need any more : )