(WILL GIVE BRAINLIEST, WILL REPORT IF WRONG) China and Japan turned away from contact with foreigners beginning in about 1450. Which was not a reason for doing this? (GIVE THE CORRECT ANSWER ONLY)

a. determination to keep outsiders from changing traditional beliefs and practices.

realizing that their civilizations were backward and poor.

fear that Europeans would try to take power and control the.

desire to remain economically and culturally self-sufficient