Which factors determine and influence development of children ?
(i) Heredity
(ii) Physical environment
(iii) Socio-cultural factors

Correct option is D

(d) (i), (ii) and (iii).
Child development is influenced by a complex interplay of various factors. Heredity (i) impacts genetic and biological attributes. The physical environment (ii) shapes development through factors like living conditions and nutrition. Socio-cultural factors (iii) include the influences of family, education, social interactions, and cultural norms. All these elements collectively contribute to a child's overall development, making (d) the most comprehensive choice.