The Relative Clause is “who are five in number”. It is a type of dependant clause (it need the main clause in order to convey its meaning properly) that has the same function of an adjective; that is to say, it modifies a noun “friends”.
Answer: disagree
Reasoning: Teachers can proved help that computers can't, as teachers can understand what the student needs help with and motived the student. While computers can understand what the student with teachers can only provide a personalized teaching to the student.
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