During parturition, a pregnant woman is having prolonged labour pains and child birth has to be fastened. It is advisable to administer a hormone that can:

Options

A. Increase the metabolic rate.
B. Release glucose in the blood
C. Stimulate the ovary.
D. Activate smooth muscles.

Explanation

**Step-by-Step Solution:**

1. **Understanding Parturition**: Parturition is the process of childbirth, which involves a series of physiological changes that lead to the delivery of the baby. During this process, the uterus undergoes contractions to help push the baby out.

2. **Identifying the Problem**: In this scenario, the pregnant woman is experiencing prolonged labor pains, indicating that the contractions of the uterus are not effective or are insufficient to facilitate childbirth.

3. **Role of Hormones in Labor**: Hormones play a crucial role in regulating the contractions of the uterus. The primary hormone associated with stimulating uterine contractions during labor is oxytocin.

4. **Function of Oxytocin**: Oxytocin is released by the posterior pituitary gland and is responsible for stimulating the smooth muscles of the uterus. When oxytocin is administered, it enhances the frequency and strength of uterine contractions.

5. **Conclusion**: To expedite childbirth in a situation of prolonged labor, administering oxytocin would be advisable as it activates the smooth muscles of the uterus, leading to more effective contractions and facilitating the delivery of the baby.

**Final Answer**: It is advisable to administer oxytocin, which activates smooth muscles in the uterus to facilitate childbirth.

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