According to Krashen, what are the conditions for effectively using the 'monitor'?
AKnowing many vocabulary words, having a native speaker to correct errors, and being in a formal setting.
BKnowing the rule, focusing on correctness, and having time to use it.
CAvoiding spontaneous speech, memorizing grammar rules, and practicing in isolation.
DBeing a child, having no fear of making mistakes, and learning intuitively.