The correct answer is:
D. Lack of health
Answer: Most of the people during that time liked to watch TV, so ads came much more popular, and people from that time also followed group norms.
Explanation: I know it, i think.
There were 9 crusades that were fought during the middle Ages, and they were groups of Europeans who traveled to the Holy Land to free it of Muslims, or took part in the Reconquista, or freeing parts of Spain from the Moors. The common factor was that they were called upon by the popes to take back the promise land, in return for a 'passage' to heaven or their souls redeemed.
hope this helps
