<span>❅☃ The dog is barking at something in the back yard. </span><span>❅☃ Answer: C. </span>❅☃Present Participle. <span>❅☃ A present Particle is when sentences are like this: </span>❅☃I am thinking ❅☃I am walking ❅☃The dog is walking. <span>❅☃ Another way to explain them is that they are a form of a verb ending in -ing</span> ❅☃Etc.