In the Ethical Challenge Feature "Nonviolence: A Legacy of Principled Effectiveness," your text suggests that the proven effectiveness of nonviolence in achieving social change is, sadly, rarely effective in interpersonal situations.
a. true
b. false

False is the correct option.

Explanation:

The approach of nonviolence is very much effective.

Option B -- false

Explanation: We should be fully kept abreast that, In the Ethical Challenge Feature "Nonviolence: A Legacy of Principled Effectiveness," your text suggests that the proven effectiveness of nonviolence in achieving social change is, happily, and very effective in interpersonal situations. Therefore, based on the aforementioned question it's False

it would be d). more resources must be obtained to attain that combination of goods and services