The balls are on their normal position. They are not attracted to each other and they do not repel each other as well. If they had charges, they would both show movement. So basing on this, the two balls probably have no charges. From the choices, the answer is: Neither ball has a charge.
Two balls are placed near one another and hang down, as shown below. Which conclusion is supported by this evidence? Neither ball has a charge. The balls are both positively charged. One ball is positively charged, and the other is negatively charged. Each ball has a charge, but the type of charge is unknown.