Because you know someone might be in danger. Guide dogs are really important for their owners, its a job. They're not just pets for them but also someone they depend on and someone they trust.
B. Everyone stands and removes their hats when the American flag passes.
<h2>there is no why, only try</h2>
What is supposed to be answered?
It's the third one!
The only one that uses the commas correctly is the third sentence. The comma must go before the coordinating conjunction.
