Babies in an iranian orphanage suffered delayed intellectual development due to question 43 options: telegraphic speech. stereotype threat. a deprived environment. savant syndrome.

I believe the answer is: a deprived environment

a deprived environment refers to the environment that lack of resources to sustain good standard of living.

This could include things such as water shortage, food unavailability, unsustainable temperature, constant life threats, etc.