The local basketball team seems to perform better in front of the home audience on their home court. According to the textbook, the phenomenon of home field advantage is BEST understood with reference to:

A. the bystander effect.
B. the foot-in-the-door phenomenon.
C. group polarization.
D. social facilitation.

Social facilitation

Explanation:

The local basketball team performs better at home court, contrary to the away court, which is a scenario of social facilitation.

social facilitation is a phenomenon that provides an increased motivation or tendency for people performed better when watched or observed by more persons. Social facilitation creates a type of drive in an individual which leads to improved performance.

The local basketball team needed extra motivation to perform better and this is provided when their fan see them perform at home court. This effect is stirred by social facilitation

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.