In a museum exhibit, three equal weights are hung with identical wires. Each wire can support a tension of no
more than 75.0 N without breaking. What is the maximum value
that W can be without breaking any wires?
A 50.0 N
B 25.0 N
C 75.0 N
D 35.0 N

(B) 25.0 N

Explanation:

This is what makes most since. You are wanting to look at the stress of the first wire. 25 *3 for the amount of balls handing of the string you get 75.0 N which is the max the top wire can hold without breaking! Hope this helps!