[Solved] The 3 kpc arm is A)A spiral arm rotating the wrong way about the nucleus B)Gas falling inward toward the center of the galaxy C)Evidence of explosive activity at the nucleus of the galaxy D)The arm containing most of the naked eye stars we see Appeal to the Mob Fallacy: A logical fallacy that argues a position is true or correct because many or most people believe it. Thermodynamics: The branch of physics that deals with the relationships between heat and other forms of energy and, by extension, the relationships between all forms of energy. Logical Strength: The extent to which the premises of an argument support its conclusion, influencing its capacity to persuade or convince logically. Sound Argument: An argument that is both valid (correctly structured so that the conclusion logically follows from the premises) and has all true premises.