Answer:
Correct answer is People had more money to spend on goods and services.
Step-by-step explanation:
First option is not correct as the people of the lower class were still not able to buy luxurious items, as they didn't had enough resources as usual.
Second option is not correct as although the trade between East and West was established during the Crusades, wars usually disabled the normal trade connections.
Third option is correct as people spent more money on certain products that were given to them through the trade and this type of ties.
Fourth option is not correct as nobles had people of their own who would brought them certain goods.