Marco is an athlete and plays three different types of sports. when he sees emma in a track suit, he assumes that she is an athlete as well. the reason this happens is that marco's schema is

The correct answer to this is:

Marco’s schema is “primed by the representativeness heuristic”.

In psychology, heuristics are rules or set rules which are used by people to form judgments or make decisions. Marcos associates Emma to be an athlete as well due to the track suit. In this case, the track suit represents an athlete.

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.

because his fleet was much lager than the english fleet. i hope this .