Question

the electric field generated by an ion is strongest near the ion. in other words, as an object gets closer to an ion, the object will feel a stronger electric force from the ion. this model represents the electric field around a positive ion. select the charge that would feel the strongest force.

Explanation:

Step1: Recall Electric Field Strength

The electric field strength is stronger closer to the source charge (the positive ion here). So we need to find which green + charge is closest to the red + ion.

Step2: Visually Compare Distances

Looking at the diagram, the green + charge below the red + (the one on the lower - left - ish side relative to the red +) is closer than the other green + charges. So this charge is nearest to the positive ion, hence feels the strongest electric force.

Answer:

The green positive charge (the one closest to the red positive ion, i.e., the lower - left green + charge relative to the red +)