What can increase in class because of a human teacher’s presence?

Correct answer: Friendship and conversation

The governing concept is that a classroom is also a community. A human teacher can encourage children to speak, ask questions, work together, and respond respectfully to one another. These activities create opportunities for friendship and conversation, so option A is correct. Machine faults are technical problems and do not result from a teacher’s presence. Loneliness is more closely associated with Margie’s isolated machine-based study, while complete silence would reduce interaction rather than increase it. The chapter contrasts the efficient but solitary mechanical teacher with the social atmosphere of old schools. Human presence can therefore enrich learning by adding communication, emotional connection, cooperation, and a sense of belonging, even though machines may still be useful for certain academic tasks.