Alright, so amongst starters, you have a few you can use to show you'll have evidence: According to text According to the passage According to the information provided As the information shows As the text mentioned, (include direct quote here) Based on the information in the passage/text, (include reasoning here) Etc. There are quite a few options, really, these are just a few. Based on whatever you are providing the information ON, the words information, text, and passage can be changed to suit your needs, such as article, newspaper, website, etc.
I believe the answer is: B. the shooting of an unarmed rider.
In the speech, there is a dark connotation that made by the speaker when he mentioned the shooting of unarmed riders who are not willing to conform to their orders. Especially to the lower ranks who are bound by the orders from higher officers.
