D. Leslie ran to the door, greeting his mother with open arms.
No it is an adverb because it tells you how something is done (e.g. lightly or loudly). An adjective would be quick.
Awnser: Thoreau begins Civil Disobedience by saying that he agrees with the motto, "That government is best which governs least." Indeed, he says, men will someday be able to have a government that does not govern at all. As it is, government rarely proves useful or efficient. It is often "mistreat and unnatural" so that it no longer represents the will of the people. The Mexican-American War illustrates this phenomenon.
Interjections,
participial phrases, and <span>adverb clauses</span>
