Which best describes an islamic belief? question 23 options: muhammad never existed there are many gods and goddesses inhabiting the world. muhammad was the last prophet in a line that included abraham and jesus. muhammad is god's only prophet.

One drawback of voluntary trade is that it a.requires two groups to use a common language b.can make one group dependent upon another for necessary goods c.doesn't occur unless there is a shortage of goods for at least one group d.forces groups to rely on themselves to produce all the goods they need