Foetal ejection reflex in human female is accelerated by

Which hormone injection is administered by doctors to induce parturition?

Following features are seen during the dilation stage of parturition $EXCEPT$ . . . . . . .

Colostrum,the yellowish fluid secreted by the mother during the initial days of lactation,is very essential to impart immunity to the newborn infants because it contains:

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$ :
Assertion $A$ : Breast-feeding during the initial period of infant growth is recommended by doctors for bringing up a healthy baby.
Reason $R$ : Colostrum contains several antibodies absolutely essential to develop resistance in the newborn baby.
In the light of the above statements,choose the most appropriate answer from the options given below:

The signals for parturition originate from the fully developed foetus and the placenta, which induce mild uterine contractions known as: