What impact did the tunisian revolution have on the arab world?

The last option.

Revolutions throughout the Arab world led to protest against political corruption, economic inequalities and human rights violations.  

Explanation:

The Tunisian uprising began as a spontaneous protest against unemployment  and the shattered expectations of youth in a growing middle class.

Its Arab neighbors as egyptian and algerian began allowing a greater margin  of freedom for public debates and expressions in the social digital channels.