**Core Concept**
Janani Surakshan Yojana (JSY) is a government-sponsored scheme aimed at reducing maternal and neonatal mortality by promoting institutional delivery among poor pregnant women. The scheme involves financial incentives for institutional deliveries and is a key component of the National Rural Health Mission (NRHM).

**Why the Correct Answer is Right**
Janani Surakshan Yojana is a conditional cash transfer (CCT) program that provides financial assistance to pregnant women for institutional delivery. The program is designed to encourage women from low-income households to give birth in a hospital or a maternity home, thereby reducing the risk of maternal and neonatal mortality. The CCT scheme provides a fixed amount of money to women who give birth in an institutional setting, which helps to offset the costs associated with delivery and hospitalization.

**Why Each Wrong Option is Incorrect**
**Option A:** Janani Sampoorna Yojana is not a known expansion of JSY. This option is likely a distractor and does not accurately represent the scheme.
**Option B:** Janani Samridhi Yojana is not a recognized expansion of JSY. This option is incorrect and does not align with the actual program.
**Option C:** Janani Swarojgar Yojana is not a valid expansion of JSY. This option is a distractor and does not accurately represent the scheme.

**Clinical Pearl / High-Yield Fact**
It's essential to note that Janani Surakshan Yojana is a key component of the National Rural Health Mission (NRHM) and has significantly contributed to reducing maternal and neonatal mortality in India. The scheme's success can be attributed to its conditional cash transfer (CCT) mechanism, which incentivizes institutional deliveries among poor pregnant women.

**✓ Correct Answer: D. Janani Surakshan Yojana**