22.One of the five key hypotheses of second language acquisition that Krashen discusses is the“ ____ Hypothesis.” In this hypothesis, Krashen shows that motivation, self-confidence, and anxiety all play a prominent role in language acquisition. These factors become crucial in the process of language acquisition, either heightening or interfering with a student’s ability to progress. What is the name of the hypothesis? (A) Effective Filter (B) Affective Filter (C) Comprehension Filter (D) Processing Filter