**Core Concept**
The Medical Termination of Pregnancy (MTP) Act regulates the conditions under which a pregnancy can be terminated. **Gestational age** is a critical factor in determining the legality and safety of the procedure.

**Why the Correct Answer is Right**
The MTP Act allows for termination of pregnancy by two Registered Medical Practitioners (RMPs) up to a certain gestational age, beyond which additional conditions and approvals are required.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not align with the standard gestational age limits set by the MTP Act.
**Option B:** Similarly, this option does not match the specified timeframe.
**Option D:** This option exceeds the typical gestational age limit for termination by two RMPs.

**Clinical Pearl / High-Yield Fact**
It is crucial to remember that the MTP Act has specific guidelines regarding gestational age and the number of medical practitioners required for approval.

**Correct Answer:** C. 20 weeks