**Core Concept**
The Millennium Development Goals (MDGs) were a set of eight international development goals established by the United Nations in 2000 to address global issues such as poverty, education, health, and gender equality. The timeline for achieving these goals was explicitly defined by the UN.

**Why the Correct Answer is Right**
The MDGs were officially launched in 2000 with a clear target date of **2015** for their achievement. This deadline was set during the World Summit on Sustainable Development in 2000 and reaffirmed by the UN General Assembly. The goals were to be completed by the end of the decade to mark the 2015 World Development Report milestone. The 2015 deadline was a key benchmark in global health and development policy.

**Why Each Wrong Option is Incorrect**
Option A: 2005 – This was too early; the MDGs were not targeted for completion by 2005, as the goals were meant to span a decade.
Option C: 2010 – The goals were not to be achieved by 2010; this was a mid-term milestone, not the target completion date.
Option D: 2020 – This is incorrect because the MDGs were explicitly set to end in 2015, and the Sustainable Development Goals (SDGs) succeeded them in 2015.

**Clinical Pearl / High-Yield Fact**
The MDGs were succeeded by the Sustainable Development Goals (SDGs) in 2015, which extend the vision to 2030. Students must remember that MDGs were to be achieved by **2015**, not later or earlier.

✓ Correct Answer: B. 2015