Answer:
The way I see this is less a question on whether or not democracy is good, but whether it's within suitable boundaries to work correctly. The overarching state exists to keep a certain order, and, if someone is to see that status quo as bad, they often won't see a point to voting. If you agree don't think this, you should engage in discussion with them about the current status quo. If you do, you should try to find the least bad candidate if you choose to vote, while focusing on actions outside of a ballot.
I think you might mean International Conference on Population and Development
This conference focused on many issues, such as introduction, reproduction and hearth. From the options provided the closest is "overpopulation" - c. The other options were not covered in the conference.
Because of Mansa Musa's pilgrimage across the world (where he showcased his wealth) the kingdom of Mali gained enormous economic success and recognition. When he went on tour showcasing his wealth to everyone he saw, he arguably became the worlds first 'celerity'. Because of his immense wealth and popularity, word got around quickly on how powerful and wealthy the kingdom of Mali is, and many scholars and all sorts of people flocked to Mali. Mansa Musa built mosques and learning centers, and Mali became a hub of learning and a bustling city. Because Mansa Musa gained celerity like status, others recognized Mali as a good place to make money, learn, worship, and live. Because of this boost of population, Mali's economy grew immensely.
Hope this helps! (you might want to look up certain dates and specifics of his pilgrimage, I hope this is a good outline though!)