Step 1: Recall the origin of the Sustainable Development Goals (SDGs).
In September 2015, the United Nations General Assembly adopted the resolution titled Transforming Our World: The 2030 Agenda for Sustainable Development at the UN Sustainable Development Summit in New York. This agenda replaced the earlier Millennium Development Goals (MDGs), which had 8 goals and were meant to run from 2000 to 2015.
Step 2: Recall the exact number of goals in the 2030 Agenda.
The 2030 Agenda established 17 Sustainable Development Goals, further broken down into 169 specific targets. These 17 goals cover areas such as no poverty, zero hunger, good health and well-being, quality education, gender equality, clean water and sanitation, affordable and clean energy, climate action, life below water, life on land, and partnerships for the goals, among others.
Step 3: Eliminate the incorrect options.
4 is far too small a number and does not correspond to any known global agenda of this scale. 15 and 11 are not the officially adopted figures either, they may be confused with other partial groupings, but the globally recognized and universally cited number remains 17.
Step 4: Conclude.
Since the 2030 Agenda for Sustainable Development explicitly lists 17 goals, the correct answer is option (C) 17.