"Within which structure does the placenta normally develop?
(1)A
(2)B
(3)C
(4)D
"

The structure within which the placenta normally develops is the part labelled: 4. D.
Placenta can be defined as a temporary organ within the female reproductive system that typically joins the developing fetus to the uterine wall of the mother, in order to allow the following activities through her blood supply:
Generally, the female reproductive system comprises the following major organs:
In conclusion, the structure within which the placenta normally develops is the part labelled D and it is called uterus.
Read more on uterus here: brainly.com/question/877660