which set of particles will experience attraction?

which set of particles will experience attraction?
Answer
Explanation:
Step1: Recall charge - interaction rule
Opposite charges attract.
Step2: Analyze each set
The first set has two positive charges (+ and +), they repel. The second set has two negative charges (- and -), they repel. The third set has a negative and a positive charge (- and +), they attract.
Answer:
The set with a negative and a positive charge (the third set) will experience attraction.