**Core Concept**
Preconception sex selection, also known as sex determination, is a practice that involves selecting the sex of a fetus before conception or during early pregnancy. This is often achieved through preimplantation genetic diagnosis (PGD) or sex selection technologies. In many countries, including India, sex determination is prohibited due to concerns about the skewed sex ratio at birth.

**Why the Correct Answer is Right**
The punishment for sex determination varies by country, but in India, it is a serious offense under the Pre-Conception and Pre-Natal Diagnostic Techniques (PCPNDT) Act, 1994. The Act prohibits the use of sex determination technologies for non-therapeutic purposes and imposes penalties on those found guilty. The punishment can range from fines to imprisonment, with the maximum sentence being three years imprisonment and a fine of up to Rs. 10,000.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify the punishment amount.
**Option B:** This option is incorrect because it does not accurately reflect the punishment amount under the PCPNDT Act.
**Option C:** This option is incorrect because it is not a correct punishment amount under the PCPNDT Act.

**Clinical Pearl / High-Yield Fact**
The PCPNDT Act has been instrumental in reducing the incidence of sex determination in India, but it remains a significant challenge in some regions. The Act has also led to the establishment of a robust regulatory framework for reproductive health services in the country.

**Correct Answer:** D.