Final Answer:
When Russia giving the suggestion to Austria to leave his little brother alone, Russia steps in as Serbia's ally to urge Austria to soften its demands (Option A).
Step-by-step explanation:
In the context of tensions between Austria and Serbia, Russia's suggestion for Austria to leave Serbia alone stems from historical alliances and interests. As Serbia's ally, Russia had a vested interest in maintaining stability in the Balkans and deterring Austrian aggression. By advising Austria to ease its demands on Serbia, Russia aimed to prevent further escalation that could lead to broader conflicts. This move was aligned with Russia's strategic interest in supporting its Slavic ally, Serbia, against Austrian pressures.
The alliance systems in place before World War I were complex and interconnected, and this scenario typifies the diplomatic maneuvers that characterized the prelude to the war. Russia, as a great power with interests in the Balkans and a commitment to supporting Serbia, intervened diplomatically to mitigate tensions and advocate for a resolution that wouldn't compromise Serbian sovereignty.
Correct answer: a. Russia steps in as Serbia's ally to urge Austria to soften its demands