What is true about static electricity?

Static electricity is primarily characterized by the accumulation of electric charge on the surface of objects, which occurs due to friction, contact, or separation. Unlike current electricity, which involves the continuous flow of electrons through a conductor, static electricity involves a stationary charge that does not flow freely in a circuit. This is why the notion that static electricity does not move accurately reflects its nature.

When discussing the other options, it's important to note that while static electricity can create potential differences that may discharge in certain conditions (such as when a charged object comes near a conductor), it doesn't inherently involve movement in the way that traditional electrical currents do. Moreover, static electricity can carry both positive and negative charges, which means it’s not always negative. While it can be dangerous in certain contexts—such as creating sparks that might ignite flammable materials—this does not universally apply to all static charges or situations. Thus, the characteristic that static electricity does not move is the defining aspect that justifies the correct answer.