Give an opinion on whether or not someone should live near the Ring of Fire.

I can't make that decision for you. It depends on how cautious and careful you want to be, and millions of people already live in that region.

It just depends on whether you want to live in places where earthquakes and volcanos, and possible tsunamis, are historically more common and frequent.

Some people find it fascinating and exciting. Some find it frightening. And many have no choice.

what are the options.

explanation:

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.