The most accurate option reflecting the effects of the Portuguese maritime empire in the Indian Ocean is:
C. The Portuguese maritime empire continued the Columbian exchange, expanded global trade, expanded Christianity's influence, and led to the suppression of local customs and beliefs.
This option correctly captures several key aspects of the Portuguese maritime empire's impact. The Portuguese established trade routes and a network of fortified trading posts throughout the Indian Ocean, which facilitated global trade and contributed to the Columbian Exchange. Additionally, they sought to spread Christianity in the regions they encountered, often leading to the suppression of local customs and religions.