Question

一道高中英语情态动词题目，请高手解答~谢谢

But gradually,people realized that only through making educated choices about their personal lives and habits ____they begain to pretect thenselves
A could B may C must Dshould
这题选什么？理由？

Answer 1

could 表示能够 句中有几个单词错了吧？！应该是：begin to protect themselves。