Two objects are held close together. when they are released, they move toward one another. which conclusion is supported by this evidence?

the objects are both positively charged.

the objects are both negatively charged.

the objects have no charge.

the objects have opposite charges.

When two objects held close together,

1. If, both objects have positive charge, they will move away as same charges repel each other.

2. If, both objects pose negative charge, they will also move away as same charges repel each other.

Therefore, if two objects carry like charges, then they will repel each other.

3. If, both objects carry no charge, then there is no repulsion and attraction between them.

4. If, one object carries positive charge and another carries negative charge, then they will move toward one another as opposite charges attract each other.

Thus, if two objects carry opposite charges, then they will attract each other.

Hence, last option i.e. the objects have opposite charges is the correct answer.

c is the answer because when something is left after something evaporates that shows the chemical change.