which of the following is true?
a. we remember less than 25 percent of what we see and hear simultaneously b we remember 30 percent of what we see.
c we remember 20 percent of what we read.
d we remember 80 percent of what we hear.

answer: b has a great day

explanation:

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.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.