0. Personalised System of education
The Personalized System of Instruction (PSI), though student-centered, may lack opportunities for social interaction and competition, and it can sometimes lead to inefficiency if not managed well.
Option A: does not inculcate a feeling of socialisation in students
Correct; the individual approach may reduce peer interaction.
Option B: does not inculcate a feeling of competition in students
Correct; focus is on self-paced mastery, not competition.
Option C: leads to wastage of time and energy
Correct; without motivation or monitoring, it may lead to delay or disengagement.
Option D: all of these are true
Correct; it summarizes all the above points.