Answer:
Uncle Hammer gets very angry, particularly at Mr. Simms. He mutters something about getting his gun and leaves in a car. Mr. Morrison follows Uncle Hammer and is able to talk him down. Confronting a white man would have been devastating for Uncle Hammer and the family.
Leave it how it is! it looks good to me!
The answer to the given sentence above would be a complex sentence. What makes it complex is that, it contains an independent and a dependent clause. The clauses are connected by a subordinating conjunction which is the word "although". Hope this answers your question.
The answer for this question is D