Which of the following is an advantage for a single-celled organism?

a. it can become very large

b. it does not have to reproduce

c. it can reproduce very quickly

d. it does not have to get energy

B

Explanation: if it is a single cell it  goes through waht they call mitoses. so  it dont have to reproduce it splits into to and grows from there.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.