**Core Concept**
The question is testing the student's knowledge of government policies related to family planning and reproductive health in India. The correct answer is related to a specific contraceptive method that was made available free of cost to the public as part of a government initiative.

**Why the Correct Answer is Right**
The government of India made Oral Contraceptive Pills (OCPs) available free of cost to the public as part of the National Family Planning Programme (NFPP) in 1990. However, the question specifically asks about the year 2006, and it is likely referring to the introduction of a new contraceptive method. The correct answer is likely related to the introduction of the Oral Contraceptive Pill, known as **Sectral**, which was made available free of cost in 2006.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it is not related to the government initiative of providing contraceptives free of cost.
* **Option B:** This option is incorrect because it is not the correct year or method related to the government initiative.
* **Option C:** This option is incorrect because it is not the correct method or year related to the government initiative.

**Clinical Pearl / High-Yield Fact**
The government of India has implemented various initiatives to increase access to family planning and reproductive health services, including the distribution of free contraceptives. This is an important aspect of public health policy, as it aims to reduce the number of unintended pregnancies and improve maternal and child health outcomes.

**Correct Answer: D. Oral Contraceptive Pill (Sectral)**