## **Core Concept**
The Medical Termination of Pregnancy (MTP) Act allows for the termination of pregnancy under certain conditions. The gestation period is a critical factor in determining the eligibility for medical termination of pregnancy.

## **Why the Correct Answer is Right**
According to the MTP Act, a single registered medical practitioner can terminate a pregnancy if the gestation period is less than **20 weeks**. Beyond this period, the opinion of two registered medical practitioners is required. The Act was amended in 2021, extending the gestation limit from 20 to 24 weeks under certain conditions, but generally, for a single practitioner, 20 weeks is the limit.

## **Why Each Wrong Option is Incorrect**
- **Option A:** . This option is incorrect because 12 weeks is indeed a period during which a single registered medical practitioner can terminate a pregnancy, but the question seems to be looking for a later gestation period limit specifically for a single practitioner.
- **Option B:** . This option suggests 24 weeks, which is indeed a new limit under specific conditions with the amendment of the MTP Act, but it generally requires the opinion of two medical practitioners.
- **Option D:** . This option suggests 30 weeks, which is beyond the usual limits specified for either one or two practitioners.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the Medical Termination of Pregnancy Act and its amendments provide specific conditions and gestation limits for pregnancy termination. Before the 2021 amendment, the limit was 20 weeks for one doctor and 12 weeks for another set of conditions. Knowing these specifics can help in making informed decisions.

## **Correct Answer:** . 20 weeks.