Answer:
C)Slavs in Russia wanted to help Slavs in Serbia.
Explanation:
Pan slavic movement flourished among nationalists sharing a common background, as an ideology dating to 1800's.
The pan slavic thinkers promoted a unifying of cultural and religious practices, mutual cooperation among all their brothers, as they saw the other slavic peoples. These peoples were often under the rule of Austria Hungary and German Empires.
Moscow held an important meeting in 1867, and Prague 1908 where the liberation of slavs was mainly leaded by the Russians. The war between Turkey and Russia led by Alexander II fueled the feelings of liberation and created the tensions that set conditions for later widespread wars.
---------Since then Serbia recieved political support and became ally as Austria Hungary declared war on this small country, which saw Russia as a hope to eventually seek independence.
