Because of his excellent administration, people lived in peace and __ and all previously neglected matters were taken care of.A. convictionB. contestC. consentD. content

此题考查的是词汇辨析。题目中提到由于他出色的管理，人们生活在一个和平和___的环境中，所有之前被忽视的事情都得到了妥善处理。选项中，A. conviction 意为“确信，坚定的信念”；B. contest 意为“竞赛，争论”；C. consent 意为“同意，许可”；D. content 意为“满足，满意”。根据题意，人们生活在一个和平和满足的环境中，因此正确答案是 D. content。