Someone tell me what is the answer and someone tell me why it is that answer! ASAP!

D)Milo is always trying to get attention, so he rubs his body against my feet, and he meows when I am in another room.

Option D is the best way to revise the sentences to include a transition. The transition used in this sentence is "so". It correctly connects the idea of Milo trying to get attention to what he does in order to get attention. Option A is a run on sentence. A comma by itself is not enough to connect the first independent clause with the next two independent clauses. There needs to be more than a comma between "attention" and "he". In option D there is a comma and "so". Option B is also not grammatically correct for the same reason as option A. Also, when using a conjunction like "and" to connect two independent clause, we do not use a semicolon before the conjunction. Option C is also not correct. The transition "Although" does not show the correct relationship between Milo trying to get attention and how he does it.