A primary teacher should try to concentrate on:

A widely recognised aim of primary/elementary education, reflected in NCERT and constructivist pedagogy, is holistic growth: nurturing a learner's intellectual, physical, social, emotional and moral growth together, rather than any single strand of growth on its own.

Applied here, a primary teacher's guiding purpose is exactly that integrated aim — shaping the whole child through everyday teaching, not chasing one measurable outcome in isolation.

• Raising intellectual standard of the students addresses only cognitive/academic growth — one strand, not the complete aim.

• Improving physical standard of students addresses only bodily/health growth — again a single strand.

• Inculcating value in students addresses only moral/character growth — also a single strand.

Each distractor isolates one strand of growth, while the primary teacher's role is built around all of them together — so "Help all round development of students" is the option that matches the accepted aim.