The word for political or social change is..
a. abolition.
b. strike.
c. reform.
d. suffrage.

The word is reform because:

Strike means a mass of people who don't agree the new rules applied so they make a revolt.

Abolition means to get over the old rules and apply a new ones

Suffrage means the paper who prove that a people had voted a certain president or a certain rule

The correct answer is C. Reform.

I hope this helps. :)