Every day, we encounter persuasive writing in media pieces that: O A. aims to convince us of something.
O B. describes something.
C. informs us about important topics.
O D. tries to entertain us.

a

Explanation:

you are aiming to convince them of something

i told you before its c

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).