Concept:Marginalized families face social and economic exclusion. Their children are often neglected in classrooms due to bias and lack of awareness, not because of any legal denial of education.Explanation:Statement (i) is correct. Teachers may hold conscious or unconscious prejudice against children from marginalized groups. This leads to neglect despite good performance.Statement (ii) is also correct. Classmates often lack sensitivity about diversity and the social background of such children. This creates an exclusionary environment.Statement (iii) is false. The Right to Education Act 2009 guarantees free and compulsory education to all children aged 6 to 14 years. It does not deny education to any group.Thus, the reasons for classroom neglect are teacher prejudice and peer insensitivity.Answer:C. (i) and (ii) only