Teachers should not do anything to cause their students to lose respect for them. And students can sense when someone is trying to hide his or her ignorance. Ttherefore, a teacher who does not know the answer to a question a student has asked should not pretend to know the answer. The conclusion is properly drawn if which one of the following is assumed? ['Students respect honesty above all else.', 'Students lose respect for teachers whenever they sense that the teachers are trying to hide their ignorance.', "Students' respect for a teacher is independent of the amount of knowledge they attribute to that teacher.", 'A teacher cannot be effective unless he or she retains the respect of students.']