Question

A primary goal of European Crusaders fighting in
the Middle East was to
(1) establish markets for Italian merchants
(2) rescue Pope Urban II from the Byzantines
(3) halt the advance of Mongol armies in the
Asian steppes
(4) secure access to Christian holy sites in
Jerusalem

Answer 1

The primary goal was to bring the Holy Land (on which Jesus lived and placed his feet) into Christian Hands, which would also mean that the Christians would have permanent access to those sides.

The correct answer is: (4) secure access to Christian holy sites in
Jerusalem

Answer 2

Answer;
4. Secures access to Christian Holy sites in Jerusalem 

A primary goal of European Crusades fighting in the Middle East was to secure access to Christian holy sites in Jerusalem.

Explanation; 
The Crusades were a series of religious and political wars fought between 1095 and 1291 for control of the Holy Land. Christians from western Europe launched a series of eight major invasions against the Middle East. The attacks were aimed at liberating the Holy Land and Jerusalem from Muslim rule.