The development of complex societies in the americas was first made possible By A. the use of slave labor .
B. the arrival of the Europeans
C. The development of agriculture
D. An extensive trade network

I think it’s C but I am not so sure I need help.

Read the information in the table and answer the question that follows. beliefs of two key leaders in the protestant reformation martin luther john calvin doing good works does not guarantee salvation. he disagreed with the catholic church regarding purgatory and other traditions. he believed god's love is a gift and not a prize to be won from human effort. doing good works does not guarantee salvation. he believed only god knows who will receive salvation. faith is the result of god's forgiveness of sins. based on the information in the table, which statement would most likely be a belief shared by both martin luther and john calvin? a. doing good deeds is not a means to salvation. b. praying will bring a person salvation. c. confessing your sins to a priest will bring penance. d. god has predestined those people who will be saved.